Lost ethernet connectivity

Fisrt of all, thanks everybody.
I'have been facing a problem of lost of connectivit at ethernet interface.
I'm using 2 Aironet 1310 as bridge between 2 buildings. The wireless configuration is OK.
It is an intermmitent problem. Sometimes all computers at the remote building lost the connectivit with the main building (DHCP, Internet) and we can't ping the remote Radio. Neither of the remote building where it are fixed.
But at the main building when I open the Radio web page, the event log show me that the radio interface is up and associated with other radio.
I'don know if is a hardware problem, when I do "sh interfaces" it's seens that all is ok.
Anyone could help me.
Thanks Carlos

Carlos,
FYI, the connections where the coax is attached to the radio can give you a lot of problems if it is not sealed perfectly. The radio installation kit comes with sealant tape, I assume your coax was sealed. If not, you may have some water in the connection or in the coax end. I have had to replace both coax and radio once that happens; however, my environment was worse than most. You may end up having to replace the radio. That is what I had to do more than once when this starts happening.
Randy

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Please read this whole message before doing anything.
This procedure is a diagnostic test. It’s unlikely to solve your problem. Don’t be disappointed when you find that nothing has changed after you complete it.
The purpose of the test is to determine whether the problem is caused by third-party software that loads automatically at startup or login, by a peripheral device, or by corruption of certain system caches.
Disconnect all wired peripherals except those needed for the test, and remove all aftermarket expansion cards. Boot in safe mode and log in to the account with the problem. Note: If FileVault is enabled on some models, or if a firmware password is set, or if the boot volume is a software RAID, you can’t do this. Ask for further instructions.
Safe mode is much slower to boot and run than normal, and some things won’t work at all, including sound output and Wi-Fi on certain models. The next normal boot may also be somewhat slow.
The login screen appears even if you usually log in automatically. You must know your login password in order to log in. If you’ve forgotten the password, you will need to reset it before you begin. Test while in safe mode. Same problem? After testing, reboot as usual (i.e., not in safe mode) and verify that you still have the problem. Post the results of the test.

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Hi, I tried rebooting with shift down, then rebooting again. No network still.
I looked in /var/log/system.log, but nothing from AppleYukon2.
I pasted the relevant portion from system.log beginning with the shutdown prior to rebooting with shift. I hope there's not too much text...........
The log below includes the reboot while holding shift as well as the subsequent reboot.
I did see several useful messages in the system log (below), for example:
May 13 15:52:44 localhost kernel[0]: GbE en0: en0 Link down
May 13 15:52:44 localhost kernel[0]: GbE en1: en1 Link down
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system.log
May 13 15:49:54 charles-geiers-mac-pro shutdown[312]: SHUTDOWN_TIME: 1242244194 208851
May 13 15:52:33 localhost com.apple.launchctl.System[2]: ** /dev/rdisk0s2
May 13 15:52:33 localhost com.apple.launchctl.System[2]: ** Root file system
May 13 15:52:33 localhost com.apple.launchctl.System[2]: ** Checking Journaled HFS Plus volume.
May 13 15:52:33 localhost com.apple.launchctl.System[2]: ** Checking Extents Overflow file.
May 13 15:52:33 localhost com.apple.launchctl.System[2]: ** Checking Catalog file.
May 13 15:52:33 localhost com.apple.launchctl.System[2]: ** Checking multi-linked files.
May 13 15:52:33 localhost com.apple.launchctl.System[2]: ** Checking Catalog hierarchy.
May 13 15:52:33 localhost com.apple.launchctl.System[2]: ** Checking Extended Attributes file.
May 13 15:52:33 localhost com.apple.launchctl.System[2]: ** Checking volume bitmap.
May 13 15:52:33 localhost com.apple.launchctl.System[2]: ** Checking volume information.
May 13 15:52:33 localhost com.apple.launchctl.System[2]: ** The volume Macintosh HD appears to be OK.
May 13 15:52:34 localhost com.apple.launchctl.System[2]: launchctl: Please convert the following to launchd: /etc/mach_init.d/chum.plist
May 13 15:52:34 localhost com.apple.launchctl.System[2]: launchctl: Please convert the following to launchd: /etc/mach_init.d/dashboardadvisoryd.plist
May 13 15:52:34 localhost com.apple.launchctl.System[2]: launchctl: Please convert the following to launchd: /etc/mach_init.d/pilotfish.plist
May 13 15:52:34 localhost com.apple.launchd[1] (com.apple.blued): Unknown key for boolean: EnableTransactions
May 13 15:52:34 localhost com.apple.launchd[1] (com.apple.distccdConfigd): Unknown key: SHAuthorizationRight
May 13 15:52:34 localhost com.apple.launchd[1] (org.cups.cupsd): Unknown key: SHAuthorizationRight
May 13 15:52:34 localhost com.apple.launchd[1] (org.ntp.ntpd): Unknown key: SHAuthorizationRight
May 13 15:52:34 localhost com.apple.launchd[1] (org.x.privileged_startx): Unknown key for boolean: EnableTransactions
May 13 15:52:36 localhost kernel[0]: npvhash=4095
May 13 15:52:34 localhost kextd[9]: safe boot detected
May 13 15:52:36 localhost kernel[0]: hi mem tramps at 0xffe00000
May 13 15:52:34 localhost kextd[9]: safe boot; invalidating extensions caches
May 13 15:52:36 localhost kernel[0]: PAE enabled
May 13 15:52:36 localhost kernel[0]: 64 bit mode enabled
May 13 15:52:36 localhost kernel[0]: Darwin Kernel Version 9.7.0: Tue Mar 31 22:52:17 PDT 2009; root:xnu-1228.12.14~1/RELEASE_I386
May 13 15:52:36 localhost kernel[0]: standard timeslicing quantum is 10000 us
May 13 15:52:36 localhost DirectoryService[10]: Launched version 5.7 (v514.25)
May 13 15:52:36 localhost kernel[0]: vmpagebootstrap: 508305 free pages and 2637423 wired pages
May 13 15:52:36 localhost kernel[0]: migtable_maxdispl = 79
May 13 15:52:36 localhost kernel[0]: Extension "com.apple.driver.AppleACPIPlatform" has immediate dependencies on both com.apple.kernel and com.apple.kpi components; use only one style.
May 13 15:52:36 localhost kernel[0]: Extension "com.apple.driver.AppleIntelCPUPowerManagement" has immediate dependencies on both com.apple.kernel and com.apple.kpi components; use only one style.
May 13 15:52:36 localhost kernel[0]: AppleACPICPU: ProcessorApicId=0 LocalApicId=0 Enabled
May 13 15:52:36 localhost kernel[0]: AppleACPICPU: ProcessorApicId=1 LocalApicId=16 Enabled
May 13 15:52:36 localhost kernel[0]: AppleACPICPU: ProcessorApicId=2 LocalApicId=2 Enabled
May 13 15:52:36 localhost kernel[0]: AppleACPICPU: ProcessorApicId=3 LocalApicId=18 Enabled
May 13 15:52:36 localhost kernel[0]: AppleACPICPU: ProcessorApicId=4 LocalApicId=4 Enabled
May 13 15:52:36 localhost kernel[0]: AppleACPICPU: ProcessorApicId=5 LocalApicId=20 Enabled
May 13 15:52:36 localhost kernel[0]: AppleACPICPU: ProcessorApicId=6 LocalApicId=6 Enabled
May 13 15:52:37 localhost kernel[0]: AppleACPICPU: ProcessorApicId=7 LocalApicId=22 Enabled
May 13 15:52:37 localhost kernel[0]: AppleACPICPU: ProcessorApicId=8 LocalApicId=1 Enabled
May 13 15:52:37 localhost kernel[0]: AppleACPICPU: ProcessorApicId=9 LocalApicId=17 Enabled
May 13 15:52:37 localhost kernel[0]: AppleACPICPU: ProcessorApicId=10 LocalApicId=3 Enabled
May 13 15:52:37 localhost kernel[0]: AppleACPICPU: ProcessorApicId=11 LocalApicId=19 Enabled
May 13 15:52:37 localhost kernel[0]: AppleACPICPU: ProcessorApicId=12 LocalApicId=5 Enabled
May 13 15:52:37 localhost kernel[0]: AppleACPICPU: ProcessorApicId=13 LocalApicId=21 Enabled
May 13 15:52:37 localhost kernel[0]: AppleACPICPU: ProcessorApicId=14 LocalApicId=7 Enabled
May 13 15:52:37 localhost kernel[0]: AppleACPICPU: ProcessorApicId=15 LocalApicId=23 Enabled
May 13 15:52:37 localhost kernel[0]: Loading security extension com.apple.nke.applicationfirewall
May 13 15:52:37 localhost kernel[0]: Loading security extension com.apple.security.seatbelt
May 13 15:52:37 localhost kernel[0]: calling mpopolicyinit for mb
May 13 15:52:37 localhost kernel[0]: Seatbelt MACF policy initialized
May 13 15:52:37 localhost kernel[0]: Security policy loaded: Seatbelt Policy (mb)
May 13 15:52:37 localhost kernel[0]: Loading security extension com.apple.security.TMSafetyNet
May 13 15:52:37 localhost kernel[0]: calling mpopolicyinit for TMSafetyNet
May 13 15:52:37 localhost kernel[0]: Security policy loaded: Safety net for Time Machine (TMSafetyNet)
May 13 15:52:37 localhost kernel[0]: Copyright (c) 1982, 1986, 1989, 1991, 1993
May 13 15:52:37 localhost kernel[0]: The Regents of the University of California. All rights reserved.
May 13 15:52:37 localhost kernel[0]: MAC Framework successfully initialized
May 13 15:52:37 localhost kernel[0]: using 16384 buffer headers and 4096 cluster IO buffer headers
May 13 15:52:37 localhost kernel[0]: IOAPIC: Version 0x20 Vectors 64:87
May 13 15:52:37 localhost kernel[0]: Extension "com.apple.driver.AppleACPIPlatform" has immediate dependencies on both com.apple.kernel and com.apple.kpi components; use only one style.
May 13 15:52:37 localhost kernel[0]: ACPI: System State [S0 S3 S4 S5] (S3)
May 13 15:52:37 localhost kernel[0]: Extension "com.apple.driver.AppleACPIPlatform" has immediate dependencies on both com.apple.kernel and com.apple.kpi components; use only one style.
May 13 15:52:37: --- last message repeated 1 time ---
May 13 15:52:37 localhost kernel[0]: mbinit: done
May 13 15:52:37 localhost kernel[0]: Security auditing service present
May 13 15:52:37 localhost kernel[0]: BSM auditing present
May 13 15:52:37 localhost kernel[0]: rooting via boot-uuid from /chosen: E0EC2838-A9E8-3916-8A50-3F12A69E4A08
May 13 15:52:37 localhost kernel[0]: Waiting on <dict ID="0"><key>IOProviderClass</key><string ID="1">IOResources</string><key>IOResourceMatch</key><string ID="2">boot-uuid-media</string></dict>
May 13 15:52:37 localhost kernel[0]: Initializing Intel82574L: Version 1.0.1b40 Built Mar 31 2009 23:39:32 -- running on device at b9d0f0
May 13 15:52:37 localhost kernel[0]: Initializing Intel82574L: Version 1.0.1b40 Built Mar 31 2009 23:39:32 -- running on device at b10d0f0
May 13 15:52:37 localhost kernel[0]: FireWire (OHCI) TI ID 823f built-in now active, GUID 0023dffffedaf1b4; max speed s800.
May 13 15:52:37 localhost kernel[0]: Got boot device = IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/SATA@1F,2/AppleAHCI/PRT2 @2/IOAHCIDevice@0/AppleAHCIDiskDriver/IOAHCIBlockStorageDevice/IOBlockStorageDri ver/WDC WD6400AAKS-41H2B0 Media/IOGUIDPartitionScheme/Customer@2
May 13 15:52:37 localhost kernel[0]: BSD root: disk0s2, major 14, minor 2
May 13 15:52:37 localhost kernel[0]: Extension "com.apple.driver.AppleHIDKeyboard" has no explicit kernel dependency; using version 6.0.
May 13 15:52:37 localhost kernel[0]: AppleIntelCPUPowerManagement: initialization complete
May 13 15:52:37 localhost kernel[0]: [HCIController][configurePM] power parent ready after 1 tries
May 13 15:52:37 localhost kernel[0]: Jettisoning kernel linker.
May 13 15:52:39 localhost kernel[0]: Intel82574L: Ethernet address 00:23:df:de:d7:34
May 13 15:52:39 localhost kernel[0]: Intel82574L: Ethernet address 00:23:df:df:68:1e
May 13 15:52:42 localhost kernel[0]: Resetting IOCatalogue.
May 13 15:52:42 localhost kextd[9]: 0 cached, 288 uncached personalities to catalog
May 13 15:52:42 localhost kernel[0]: PXS1: family specific matching fails
May 13 15:52:42 localhost kernel[0]: Matching service count = 1
May 13 15:52:43 localhost kernel[0]: Previous Shutdown Cause: 3
May 13 15:52:43 localhost kernel[0]: NVDANV50HAL loaded and registered.
May 13 15:52:43 localhost mDNSResponder mDNSResponder-176.3 (Nov 3 2008 16:52:57)[16]: starting
May 13 15:52:43 localhost kernel[0]: PXS1: family specific matching fails
May 13 15:52:44: --- last message repeated 1 time ---
May 13 15:52:44 localhost kernel[0]: Matching service count = 0
May 13 15:52:44 localhost kernel[0]: GbE en0: en0 Link down
May 13 15:52:44 localhost kernel[0]: GbE en1: en1 Link down
May 13 15:52:45 localhost configd[14]: AppleTalk startup
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May 13 15:52:45 charles-geiers-mac-pro com.apple.launchd[1] (com.openssh.sshd): Unknown key: SHAuthorizationRight
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May 13 15:52:46 charles-geiers-mac-pro com.apple.launchd[1] (com.apple.distccdConfigd[49]): Exited with exit code: 255
May 13 15:52:46 charles-geiers-mac-pro fseventsd[45]: log dir: /.fseventsd getting new uuid: 2E3BEC06-C8D1-4BCC-ABAC-AA9AA7CD83AA
May 13 15:52:47 charles-geiers-mac-pro org.ntp.ntpd[32]: Error : nodename nor servname provided, or not known
May 13 15:52:47 charles-geiers-mac-pro ntpdate[65]: can't find host time.apple.com
May 13 15:52:47 charles-geiers-mac-pro ntpdate[65]: no servers can be used, exiting
May 13 15:52:48 charles-geiers-mac-pro com.apple.configureLocalKDC[52]: sh: /usr/libexec/PlistBuddy: No such file or directory
May 13 15:52:48 charles-geiers-mac-pro com.apple.configureLocalKDC[52]: Error: configureLocalKDC cannot parse /var/db/dslocal/nodes/Default/config/KerberosKDC.plist
May 13 15:52:48 charles-geiers-mac-pro com.apple.launchd[1] (com.apple.configureLocalKDC[52]): Exited with exit code: 1
May 13 15:52:48 charles-geiers-mac-pro kernel[0]: GbE en1: en1 Link down
May 13 15:52:49 charles-geiers-mac-pro kernel[0]: GbE en0: en0 Link down
May 13 15:52:49 charles-geiers-mac-pro kernel[0]: ALF ALERT: sockwallcntlupdaterules ctl_enqueuedata rts err 55
May 13 15:52:49 charles-geiers-mac-pro blued[55]: Apple Bluetooth daemon started.
May 13 15:52:50 charles-geiers-mac-pro kernel[0]: ALF ALERT: sockwallcntlupdaterules ctl_enqueuedata rts err 55
May 13 15:52:50: --- last message repeated 10 times ---
May 13 15:52:50 charles-geiers-mac-pro configd[14]: AppleTalk startup complete
May 13 15:52:51 charles-geiers-mac-pro kernel[0]: ALF ALERT: sockwallcntlupdaterules ctl_enqueuedata rts err 55
May 13 15:52:51 charles-geiers-mac-pro /System/Library/CoreServices/loginwindow.app/Contents/MacOS/loginwindow[40]: Login Window Application Started -- Threaded auth
May 13 15:52:51 charles-geiers-mac-pro /usr/sbin/ocspd[77]: starting
May 13 15:52:53 charles-geiers-mac-pro kernel[0]: GbE en0: en0 Link down
May 13 15:52:53 charles-geiers-mac-pro kextd[9]: writing kernel link data to /var/run/mach.sym
May 13 15:52:56 charles-geiers-mac-pro com.apple.ATSServer[81]: FODBCheck: New annex file created
May 13 15:52:56 charles-geiers-mac-pro fseventsd[45]: bumping event counter to: 0x7132b0 (current 0x1eb) from log file '0000000000001c08'
May 13 15:52:57 charles-geiers-mac-pro fseventsd[45]: bumping event counter to: 0x71333f (current 0x71332e) from log file '00000000000008ac'
May 13 15:52:57 charles-geiers-mac-pro com.apple.SystemStarter[34]: Starting D-Bus System Bus
May 13 15:53:05 charles-geiers-mac-pro loginwindow[40]: Login Window Started Security Agent
May 13 15:53:26 charles-geiers-mac-pro com.apple.dyld[11]: updatedyld_sharedcache[11] regenerated cache for arch=i386
May 13 15:53:26 charles-geiers-mac-pro loginwindow[40]: Login Window - Returned from Security Agent
May 13 15:53:26 charles-geiers-mac-pro shutdown[111]: reboot by _mdnsresponder:
May 13 15:53:26 charles-geiers-mac-pro shutdown[111]: SHUTDOWN_TIME: 1242244406 976183
May 13 15:53:26 charles-geiers-mac-pro com.apple.loginwindow[40]: Shutdown NOW!
May 13 15:53:26 charles-geiers-mac-pro mDNSResponder mDNSResponder-176.3 (Nov 3 2008 16:52:57)[16]: stopping
May 13 15:53:26 charles-geiers-mac-pro com.apple.loginwindow[40]: System shutdown time has arrived^G^G
May 13 15:53:27 charles-geiers-mac-pro /usr/sbin/kdcmond[42]: dnssd_clientstub read_all(3) failed 0/28 0
May 13 15:53:59 localhost com.apple.launchctl.System[2]: launchctl: Please convert the following to launchd: /etc/mach_init.d/chum.plist
May 13 15:53:59 localhost com.apple.launchctl.System[2]: launchctl: Please convert the following to launchd: /etc/mach_init.d/dashboardadvisoryd.plist
May 13 15:53:59 localhost com.apple.launchctl.System[2]: launchctl: Please convert the following to launchd: /etc/mach_init.d/pilotfish.plist
May 13 15:53:59 localhost com.apple.launchd[1] (com.apple.blued): Unknown key for boolean: EnableTransactions
May 13 15:53:59 localhost com.apple.launchd[1] (com.apple.distccdConfigd): Unknown key: SHAuthorizationRight
May 13 15:53:59 localhost com.apple.launchd[1] (org.cups.cupsd): Unknown key: SHAuthorizationRight
May 13 15:53:59 localhost com.apple.launchd[1] (org.ntp.ntpd): Unknown key: SHAuthorizationRight
May 13 15:53:59 localhost com.apple.launchd[1] (org.x.privileged_startx): Unknown key for boolean: EnableTransactions
May 13 15:54:01 localhost kernel[0]: npvhash=4095
May 13 15:54:00 localhost DirectoryService[11]: Launched version 5.7 (v514.25)
May 13 15:54:01 localhost kernel[0]: hi mem tramps at 0xffe00000
May 13 15:54:01 localhost kernel[0]: PAE enabled
May 13 15:54:01 localhost kernel[0]: 64 bit mode enabled
May 13 15:54:01 localhost kernel[0]: Darwin Kernel Version 9.7.0: Tue Mar 31 22:52:17 PDT 2009; root:xnu-1228.12.14~1/RELEASE_I386
May 13 15:54:01 localhost kernel[0]: standard timeslicing quantum is 10000 us
May 13 15:54:01 localhost kernel[0]: vmpagebootstrap: 3037903 free pages and 107825 wired pages
May 13 15:54:01 localhost kernel[0]: migtable_maxdispl = 79
May 13 15:54:01 localhost kernel[0]: Extension "com.apple.driver.AppleACPIPlatform" has immediate dependencies on both com.apple.kernel and com.apple.kpi components; use only one style.
May 13 15:54:01 localhost kernel[0]: Extension "com.apple.driver.AppleIntelCPUPowerManagement" has immediate dependencies on both com.apple.kernel and com.apple.kpi components; use only one style.
May 13 15:54:01 localhost kernel[0]: AppleACPICPU: ProcessorApicId=0 LocalApicId=0 Enabled
May 13 15:54:01 localhost kernel[0]: AppleACPICPU: ProcessorApicId=1 LocalApicId=16 Enabled
May 13 15:54:01 localhost kernel[0]: AppleACPICPU: ProcessorApicId=2 LocalApicId=2 Enabled
May 13 15:54:01 localhost kernel[0]: AppleACPICPU: ProcessorApicId=3 LocalApicId=18 Enabled
May 13 15:54:01 localhost kernel[0]: AppleACPICPU: ProcessorApicId=4 LocalApicId=4 Enabled
May 13 15:54:01 localhost kernel[0]: AppleACPICPU: ProcessorApicId=5 LocalApicId=20 Enabled
May 13 15:54:01 localhost kernel[0]: AppleACPICPU: ProcessorApicId=6 LocalApicId=6 Enabled
May 13 15:54:01 localhost kernel[0]: AppleACPICPU: ProcessorApicId=7 LocalApicId=22 Enabled
May 13 15:54:01 localhost kernel[0]: AppleACPICPU: ProcessorApicId=8 LocalApicId=1 Enabled
May 13 15:54:01 localhost kernel[0]: AppleACPICPU: ProcessorApicId=9 LocalApicId=17 Enabled
May 13 15:54:01 localhost kernel[0]: AppleACPICPU: ProcessorApicId=10 LocalApicId=3 Enabled
May 13 15:54:01 localhost kernel[0]: AppleACPICPU: ProcessorApicId=11 LocalApicId=19 Enabled
May 13 15:54:01 localhost kernel[0]: AppleACPICPU: ProcessorApicId=12 LocalApicId=5 Enabled
May 13 15:54:01 localhost kernel[0]: AppleACPICPU: ProcessorApicId=13 LocalApicId=21 Enabled
May 13 15:54:01 localhost kernel[0]: AppleACPICPU: ProcessorApicId=14 LocalApicId=7 Enabled
May 13 15:54:01 localhost kernel[0]: AppleACPICPU: ProcessorApicId=15 LocalApicId=23 Enabled
May 13 15:54:01 localhost kernel[0]: Loading security extension com.apple.nke.applicationfirewall
May 13 15:54:01 localhost kernel[0]: Loading security extension com.apple.security.seatbelt
May 13 15:54:01 localhost kernel[0]: calling mpopolicyinit for mb
May 13 15:54:01 localhost kernel[0]: Seatbelt MACF policy initialized
May 13 15:54:01 localhost kernel[0]: Security policy loaded: Seatbelt Policy (mb)
May 13 15:54:01 localhost kernel[0]: Loading security extension com.apple.security.TMSafetyNet
May 13 15:54:01 localhost kernel[0]: calling mpopolicyinit for TMSafetyNet
May 13 15:54:01 localhost kernel[0]: Security policy loaded: Safety net for Time Machine (TMSafetyNet)
May 13 15:54:01 localhost kernel[0]: Copyright (c) 1982, 1986, 1989, 1991, 1993
May 13 15:54:01 localhost kernel[0]: The Regents of the University of California. All rights reserved.
May 13 15:54:01 localhost kernel[0]: MAC Framework successfully initialized
May 13 15:54:01 localhost kernel[0]: using 16384 buffer headers and 4096 cluster IO buffer headers
May 13 15:54:01 localhost kernel[0]: IOAPIC: Version 0x20 Vectors 64:87
May 13 15:54:01 localhost kernel[0]: Extension "com.apple.driver.AppleACPIPlatform" has immediate dependencies on both com.apple.kernel and com.apple.kpi components; use only one style.
May 13 15:54:01 localhost kernel[0]: ACPI: System State [S0 S3 S4 S5] (S3)
May 13 15:54:01 localhost kernel[0]: Extension "com.apple.driver.AppleACPIPlatform" has immediate dependencies on both com.apple.kernel and com.apple.kpi components; use only one style.
May 13 15:54:01: --- last message repeated 1 time ---
May 13 15:54:01 localhost kernel[0]: mbinit: done
May 13 15:54:01 localhost kernel[0]: Security auditing service present
May 13 15:54:01 localhost kernel[0]: BSM auditing present
May 13 15:54:01 localhost kernel[0]: rooting via boot-uuid from /chosen: E0EC2838-A9E8-3916-8A50-3F12A69E4A08
May 13 15:54:01 localhost kernel[0]: Waiting on <dict ID="0"><key>IOProviderClass</key><string ID="1">IOResources</string><key>IOResourceMatch</key><string ID="2">boot-uuid-media</string></dict>
May 13 15:54:01 localhost kernel[0]: Initializing Intel82574L: Version 1.0.1b40 Built Mar 31 2009 23:39:32 -- running on device at b9d0f0
May 13 15:54:01 localhost kernel[0]: Initializing Intel82574L: Version 1.0.1b40 Built Mar 31 2009 23:39:32 -- running on device at b10d0f0
May 13 15:54:01 localhost kernel[0]: FireWire (OHCI) TI ID 823f built-in now active, GUID 0023dffffedaf1b4; max speed s800.
May 13 15:54:01 localhost kernel[0]: Got boot device = IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/SATA@1F,2/AppleAHCI/PRT2 @2/IOAHCIDevice@0/AppleAHCIDiskDriver/IOAHCIBlockStorageDevice/IOBlockStorageDri ver/WDC WD6400AAKS-41H2B0 Media/IOGUIDPartitionScheme/Customer@2
May 13 15:54:01 localhost kernel[0]: BSD root: disk0s2, major 14, minor 2
May 13 15:54:01 localhost kernel[0]: Extension "com.apple.driver.AppleHIDKeyboard" has no explicit kernel dependency; using version 6.0.
May 13 15:54:01 localhost kernel[0]: [HCIController][configurePM] power parent ready after 1 tries
May 13 15:54:01 localhost kernel[0]: AppleIntelCPUPowerManagement: initialization complete
May 13 15:54:01 localhost kernel[0]: Jettisoning kernel linker.
May 13 15:54:01 localhost kernel[0]: Intel82574L: Ethernet address 00:23:df:de:d7:34
May 13 15:54:01 localhost kernel[0]: Intel82574L: Ethernet address 00:23:df:df:68:1e
May 13 15:54:01 localhost mDNSResponder mDNSResponder-176.3 (Nov 3 2008 16:52:57)[16]: starting
May 13 15:54:02 localhost com.apple.launchd[1] (com.openssh.sshd): Unknown key: SHAuthorizationRight
May 13 15:54:03 localhost kernel[0]: GbE en0: en0 Link down
May 13 15:54:03 localhost kernel[0]: GbE en1: en1 Link down
May 13 15:54:03 localhost configd[14]: AppleTalk startup
May 13 15:54:03 charles-geiers-mac-pro configd[14]: setting hostname to "charles-geiers-mac-pro.local"
May 13 15:54:07 charles-geiers-mac-pro bootlog[47]: BOOT_TIME: 1242244435 0
May 13 15:54:07 charles-geiers-mac-pro com.apple.configureLocalKDC[45]: sh: /usr/libexec/PlistBuddy: No such file or directory
May 13 15:54:07 charles-geiers-mac-pro com.apple.configureLocalKDC[45]: Error: configureLocalKDC cannot parse /var/db/dslocal/nodes/Default/config/KerberosKDC.plist
May 13 15:54:07 charles-geiers-mac-pro com.apple.launchd[1] (com.apple.configureLocalKDC[45]): Exited with exit code: 1
May 13 15:54:07 charles-geiers-mac-pro org.ntp.ntpd[25]: Error : nodename nor servname provided, or not known
May 13 15:54:07 charles-geiers-mac-pro ntpdate[61]: can't find host time.apple.com
May 13 15:54:07 charles-geiers-mac-pro com.apple.launchd[1] (com.apple.distccdConfigd[42]): Exited with exit code: 255
May 13 15:54:07 charles-geiers-mac-pro kernel[0]: GbE en1: en1 Link down
May 13 15:54:07 charles-geiers-mac-pro ntpdate[61]: no servers can be used, exiting
May 13 15:54:07 charles-geiers-mac-pro Parallels[66]: Starting Parallels networking...
May 13 15:54:07 charles-geiers-mac-pro rpc.statd[29]: statd.notify - no notifications needed
May 13 15:54:07 charles-geiers-mac-pro fseventsd[38]: bumping event counter to: 0x71355c (current 0x0) from log file '000000000000008b'
May 13 15:54:08 charles-geiers-mac-pro kernel[0]: GbE en0: en0 Link down
May 13 15:54:08 charles-geiers-mac-pro kernel[0]: ALF ALERT: sockwallcntlupdaterules ctl_enqueuedata rts err 55
May 13 15:54:08 charles-geiers-mac-pro blued[48]: Apple Bluetooth daemon started.
May 13 15:54:08 charles-geiers-mac-pro kernel[0]: ALF ALERT: sockwallcntlupdaterules ctl_enqueuedata rts err 55
May 13 15:54:08: --- last message repeated 1 time ---
May 13 15:54:08 charles-geiers-mac-pro /usr/sbin/ocspd[91]: starting
May 13 15:54:08 charles-geiers-mac-pro kernel[0]: ALF ALERT: sockwallcntlupdaterules ctl_enqueuedata rts err 55
May 13 15:54:09: --- last message repeated 9 times ---
May 13 15:54:09 charles-geiers-mac-pro configd[14]: AppleTalk startup complete
May 13 15:54:10 charles-geiers-mac-pro kernel[0]: Resetting IOCatalogue.
May 13 15:54:10 charles-geiers-mac-pro kextd[10]: 429 cached, 0 uncached personalities to catalog
May 13 15:54:10 charles-geiers-mac-pro kernel[0]: PXS1: family specific matching fails
May 13 15:54:10 charles-geiers-mac-pro kernel[0]: Matching service count = 1
May 13 15:54:10 charles-geiers-mac-pro kernel[0]: Matching service count = 19
May 13 15:54:10: --- last message repeated 4 times ---
May 13 15:54:10 charles-geiers-mac-pro kernel[0]: Matching service count = 20
May 13 15:54:11 charles-geiers-mac-pro kernel[0]: MacPro4,1: stalling for module
May 13 15:54:12 charles-geiers-mac-pro kernel[0]: Matching service count = 1
May 13 15:54:12 charles-geiers-mac-pro kernel[0]: AppleTyMCEDriver::probe(MacPro4,1)
May 13 15:54:12 charles-geiers-mac-pro kernel[0]: AppleTyMCEDriver::start(MacPro4,1) <1>
May 13 15:54:12 charles-geiers-mac-pro kernel[0]: AppleTyMCEDriver::start coreVIDPID = 0x2c408086 Number of packages = 2 Number of cpus = 16
May 13 15:54:12 charles-geiers-mac-pro kernel[0]: AppleTyMCEDriver::start memory monitor trough PCI
May 13 15:54:12 charles-geiers-mac-pro kernel[0]: AppleTyMCEDriver::start 4 dimm slots per package
May 13 15:54:12 charles-geiers-mac-pro kernel[0]: GbE en0: en0 Link down
May 13 15:54:12 charles-geiers-mac-pro kernel[0]: Previous Shutdown Cause: 3
May 13 15:54:12 charles-geiers-mac-pro kernel[0]: NVDANV50HAL loaded and registered.
May 13 15:54:12 charles-geiers-mac-pro kernel[0]: PXS1: family specific matching fails
May 13 15:54:12 charles-geiers-mac-pro com.parallels.desktop.launchdaemon[52]: kextload serialization lock busy; sleeping (89 retries left)
May 13 15:54:12 charles-geiers-mac-pro kernel[0]: PXS1: family specific matching fails
May 13 15:54:12 charles-geiers-mac-pro /System/Library/CoreServices/loginwindow.app/Contents/MacOS/loginwindow[33]: Login Window Application Started -- Threaded auth
May 13 15:54:12 charles-geiers-mac-pro kernel[0]: PXS1: family specific matching fails
May 13 15:54:12: --- last message repeated 1 time ---
May 13 15:54:12 charles-geiers-mac-pro kernel[0]: Matching service count = 0
May 13 15:54:13 charles-geiers-mac-pro kernel[0]: /prl_hid/ Parallels HID Helper started.
May 13 15:54:13 charles-geiers-mac-pro kernel[0]: /drv/ HypApic.c:235 Host APIC phy 0xFEE00000 lin 0xa5e64000 ver 0x15
May 13 15:54:13 charles-geiers-mac-pro kernel[0]: /drv/ HypRealCpu.c:189 hypRealCpusInfoInit: STATUS_SUCCESS
May 13 15:54:13 charles-geiers-mac-pro kernel[0]: /drv/ HypLowCache.c:158 Low cache initialized (11712 kB for 24 VMs on 12288 MB)
May 13 15:54:13 charles-geiers-mac-pro kernel[0]: /drv/ HypModule.c:178 Parallels IPI irq = 0 ipi = 0(0x0)
May 13 15:54:13 charles-geiers-mac-pro kernel[0]: /drv/ HypModule.c:181 Parallels Hypervisor 4.0.3540.209168 loaded.
May 13 15:54:13 charles-geiers-mac-pro kernel[0]: com.parallels.kext.prlnet 4.0.3540.209168 has started.
May 13 15:54:13 charles-geiers-mac-pro kernel[0]: com.parallels.kext.vnic 4.0.3540.209168 has started.
May 13 15:54:13 charles-geiers-mac-pro com.parallels.desktop.launchdaemon[52]: kextload: extension /System/Library/Extensions/prl_vnic.kext is already loaded
May 13 15:54:13 charles-geiers-mac-pro /Library/Parallels/Parallels Service.app/Contents/MacOS/prlnetstart[70]: [PrlNet] PrlAdaptersKext has been already loaded (0)
May 13 15:54:13 charles-geiers-mac-pro /Library/Parallels/Parallels Service.app/Contents/MacOS/prlnetstart[70]: [loadPrlNetbridgeKext] /sbin/kextload /System/Library/Extensions/prl_netbridge.kext
May 13 15:54:13 charles-geiers-mac-pro com.parallels.desktop.launchdaemon[52]: kextload: extension /System/Library/Extensions/prl_netbridge.kext is already loaded
May 13 15:54:13 charles-geiers-mac-pro com.parallels.desktop.launchdaemon[52]: kextload: extension /System/Library/Extensions/prl_vnic.kext is already loaded
May 13 15:54:13 charles-geiers-mac-pro com.parallels.desktop.launchdaemon[52]: No suitable device found for PVS0.
May 13 15:54:13 charles-geiers-mac-pro kernel[0]: comparallels_kext_prl_vnic_device0: Ethernet address 00:1c:42:00:00:08
May 13 15:54:14 charles-geiers-mac-pro com.parallels.desktop.launchdaemon[52]: kextload: extension /System/Library/Extensions/prl_vnic.kext is already loaded
May 13 15:54:14 charles-geiers-mac-pro com.parallels.desktop.launchdaemon[52]: No suitable device found for PVS1.
May 13 15:54:14 charles-geiers-mac-pro kernel[0]: comparallels_kext_prl_vnic_device1: Ethernet address 00:1c:42:00:00:09
May 13 15:54:17 charles-geiers-mac-pro com.apple.launchd[1] (com.parallels.vm.prl_naptd): Unknown key for boolean: SuccessfulExit
May 13 15:54:17 charles-geiers-mac-pro prl_naptd[152]: Starting Parallels Network Daemon
May 13 15:54:17 charles-geiers-mac-pro prl_naptd[152]: en4: DHCP/NAT for 10.211.55.1-10.211.55.254 netmask 255.255.255.0
May 13 15:54:17 charles-geiers-mac-pro prl_naptd[152]: en5: DHCP for 10.37.129.1-10.37.129.254 netmask 255.255.255.0
May 13 15:54:17 charles-geiers-mac-pro com.apple.SystemStarter[27]: Starting D-Bus System Bus
May 13 15:54:18 charles-geiers-mac-pro com.parallels.desktop.launchdaemon[52]: Configuring en4...
May 13 15:54:18 charles-geiers-mac-pro com.parallels.desktop.launchdaemon[52]: No System Preferences changes required.
May 13 15:54:18 charles-geiers-mac-pro com.parallels.desktop.launchdaemon[52]: Configuring en5...
May 13 15:54:18 charles-geiers-mac-pro com.parallels.desktop.launchdaemon[52]: No System Preferences changes required.
May 13 15:54:18 charles-geiers-mac-pro Parallels[158]: Parallels networking sucessfully started
May 13 15:54:19 charles-geiers-mac-pro prl_naptd[152]: Reloading configuration...
May 13 15:54:19 charles-geiers-mac-pro Parallels[162]: Restarting CiscoVPN
May 13 15:54:19 charles-geiers-mac-pro SystemStarter[164]: Unknown service: CiscoVPN
May 13 15:54:19 charles-geiers-mac-pro Parallels[167]: Starting Parallels Dispatcher Service
May 13 15:54:19 charles-geiers-mac-pro prl_naptd[152]: en4: DHCP/NAT for 10.211.55.1-10.211.55.254 netmask 255.255.255.0
May 13 15:54:19 charles-geiers-mac-pro prl_naptd[152]: en5: DHCP for 10.37.129.1-10.37.129.254 netmask 255.255.255.0
May 13 15:54:25 charles-geiers-mac-pro loginwindow[33]: Login Window Started Security Agent
May 13 15:54:25 charles-geiers-mac-pro authorizationhost[184]: MechanismInvoke 0x1271a0 retainCount 2
May 13 15:54:25 charles-geiers-mac-pro SecurityAgent[185]: MechanismInvoke 0x1015f0 retainCount 1
May 13 15:54:25 charles-geiers-mac-pro SecurityAgent[185]: MechanismDestroy 0x1015f0 retainCount 1
May 13 15:54:25 charles-geiers-mac-pro loginwindow[33]: Login Window - Returned from Security Agent
May 13 15:54:25 charles-geiers-mac-pro authorizationhost[184]: MechanismDestroy 0x1271a0 retainCount 2
May 13 15:54:25 charles-geiers-mac-pro loginwindow[33]: USER_PROCESS: 33 console
May 13 15:54:25 charles-geiers-mac-pro com.apple.launchd[1] (com.apple.UserEventAgent-LoginWindow[180]): Exited: Terminated
May 13 15:54:25 charles-geiers-mac-pro com.apple.launchd[1] (com.apple.ScreenSharing.server[179]): Exited: Terminated
May 13 15:54:25 charles-geiers-mac-pro com.apple.launchd[138] (com.apple.AirPortBaseStationAgent): Unknown key for boolean: EnableTransactions
May 13 15:54:25 charles-geiers-mac-pro com.apple.launchd[138] (org.x.startx): Unknown key for boolean: EnableTransactions
May 13 15:54:25 charles-geiers-mac-pro com.apple.ATSServer[198]: FODBCheck: New annex file created
May 13 15:54:26 charles-geiers-mac-pro /System/Library/CoreServices/coreservicesd[81]: SFLSharePointsEntry::CreateDSRecord: dsCreateRecordAndOpen(Macintosh HD) returned -14135
May 13 15:54:26 charles-geiers-mac-pro /System/Library/CoreServices/coreservicesd[81]: SFLSharePointsEntry::CreateDSRecord: dsCreateRecordAndOpen(Kai Hwang's Public Folder) returned -14135
May 13 15:54:26 charles-geiers-mac-pro /System/Library/CoreServices/coreservicesd[81]: SFLSharePointsEntry::CreateDSRecord: dsCreateRecordAndOpen(Charles Geier's Public Folder) returned -14135
May 13 15:54:26 charles-geiers-mac-pro com.apple.launchd[138] ([email protected][187]): Exited with exit code: 1
May 13 15:54:27 charles-geiers-mac-pro kextd[10]: writing kernel link data to /var/run/mach.sym
May 13 15:54:27 charles-geiers-mac-pro SystemUIServer[200]: \n MenuCracker\n see http://sourceforge.net/projects/menucracker\n MenuCracker is now loaded. Ready to accept new menus. Ignore the failure message that follow.
May 13 15:54:28 charles-geiers-mac-pro SystemUIServer[200]: failed to load Menu Extra: NSBundle </Library/PreferencePanes/MenuMeters.prefPane/Contents/Resources/MenuCracker.me nu> (loaded)
May 13 15:54:28 charles-geiers-mac-pro SystemUIServer[200]: MenuCracker: Loading 'MenuMeterCPUExtra'.
May 13 15:54:29 charles-geiers-mac-pro SystemUIServer[200]: MenuMeterCPU loaded.
May 13 15:54:29 charles-geiers-mac-pro SystemUIServer[200]: MenuCracker: Loading 'MenuMeterMemExtra'.
May 13 15:54:29 charles-geiers-mac-pro SystemUIServer[200]: MenuMeterMem loaded.
May 13 15:54:29 charles-geiers-mac-pro SystemUIServer[200]: MenuCracker: Loading 'MenuMeterDiskExtra'.
May 13 15:54:29 charles-geiers-mac-pro SystemUIServer[200]: MenuMeterDisk loaded.
May 13 15:55:25 charles-geiers-mac-pro login[287]: USER_PROCESS: 287 ttys000
May 13 15:57:14 charles-geiers-mac-pro fseventsd[38]: log dir: /Volumes/Untitled/.fseventsd getting new uuid: 11673E34-7260-45D5-82B5-530117D6C5C6
May 13 15:57:14 charles-geiers-mac-pro /System/Library/CoreServices/backupd[366]: Backup requested due to disk attach
May 13 15:57:14 charles-geiers-mac-pro /System/Library/CoreServices/backupd[366]: Starting standard backup
May 13 15:57:15 charles-geiers-mac-pro /System/Library/CoreServices/backupd[366]: Backing up to: /Volumes/brains/Backups.backupdb
May 13 15:57:15 charles-geiers-mac-pro /System/Library/CoreServices/backupd[366]: Event store UUIDs don't match for volume: Macintosh HD
May 13 15:57:15 charles-geiers-mac-pro /System/Library/CoreServices/backupd[366]: Node requires deep traversal:/ reason:kFSEDBEventFlagMustScanSubDirs|kFSEDBEventFlagReasonEventDBUntrustable|

Wi-Fi connectivity lost, ethernet through time capsule works fine. Wi-Fi adapter broken??

Weird... I have been using my iMac through Time Capsule.... Wi-Fi set-up works fine for iPod, iPad and Windows PC. Last week I lost my connectivity on iMac temporarily... it re-connected automatically several times, but after yesterday the connection didn't come back. Hooked up my Airport Express for speakers so now I'm connected through Airport Express and Ethernet connector on iMac. What can be wrong here??? Any help is appreciated, and hey, no, the iMac is within Wi-Fi distance!
Thans a lot..
Peter

Try downgrading your TimeCapsule to 7.5.2 (it proved to solve almost all the problems with Time Capsule). You can check how to do it here: http://support.apple.com/kb/HT1218

AirPort Express over Ethernet lost the connection

I have an AirPort Express device. It's works well, if I connect it over WLAN. If I connect the AirPort Express over Ethernet via cable, then after about 15 minutes, I lost the connection between my PC and the AirPort Express.
Does I have to change settings in my router?

then when I try to switch it to extending
That is not the correct setting to use.
"Extending" is only used when an AirPort connects using a wireless connection to another AirPort router.
When the AirPort connects using Ethernet, you have to use the "Create a wireless network" setting.
It might be a lot easier if you simply start all over again and let the configuration "wizard" do most of the work for you. All that you really have to do is name the network, name the Express, enter the password and click Next. Everything else is handled by the configuration utility.
Post back if you are not sure how to do this.

Gige ethernet camera lost its connection while running

Dear All,
I am using a Gige ethernet camera for triggered acquisition.I need to achieve a network speed of 1Gbps with 9000 maximum packet size for my application. But sometimes this network speed drops down to100Mbps with 1450 packet size due to noise and some other artifacts which leads to lost camera connection from system.To again get camera in connection I need to close the application and restart it .Sometimes I close the application and reconnect the ethernet cable to get camera properly connected with the system.
As I cannot completely get rid of noise and other interefrence I want to connect and configure a disconnected camera in run time.So on error of device connection lost I tried using IMAQdX unconfigure acquisition.vi and IMAQdX configure acquisition.vi but it was of no use.Then I tried to close camera connection first and repeated whole the procedure of opening and configuring the camera but everything done was of no use.
Please suggest me any solution to this problem.
Thank You
Anagha

Hi Anagha.G,
It's not only with ethernet, infact with every other camera/hardware.
Whenever u open a device during starting phase, the labview gets hold of the device driver.
If the device is not properly closed for some reason during some processing, the device handle will be locked and labview will not be able to get hold of device back.
For that to happen, i think the probabilistic solution is only close labview which is using the device and restart the code.
May be try, not only unconfiguring but also close the connection and try reopening during an error and check (may work).
Thanks
uday,
Please Mark the solution as accepted if your problem is solved and help author by clicking on kudoes
Certified LabVIEW Associate Developer (CLAD) Using LV13

Ethernet connection lost during migration

The ethernet connection gets lost while attempting an initial migration from an iMac 10.6.2 to a MacBook 10.6.1.
Supposedly, there are some advantages to doing a migration during the first set-up process.
Following the prompts on the new MacBook to connect an ethernet cable to the older Mac, then open Migration Assistant.
Shortly after entering the Administrator password and the code number from the new MacBook the connection is lost.
Maybe there never was a connection, how would I know?
Tried two different cables, could they both be defective?
Anyone have experienced this problem and know the solution?

R C-R
Thought that you would be interested to know that your thoughtful and appreciated suggestions made no difference in eliminating the connection failure messages.
The MacBook is new. No one has ventured past the Welcome process. One of the first options after selecting language, country, & keyboard is the option of migrating information from another source. I chose to migrate From Another Mac.
The window instructions state to connect the two computers with an Ethernet cable, which I did.
Open the Migration Assistant in the iMac. Followed the instructions in the windows.
The iMac recognized the MacBook and a passcode appeared in the MacBook window.
The passcode was entered in the iMac, and the gathering of information begins in each computer.
Then the drop down window with "The Network Connection Failed" appears first in the MacBook then the iMac.
End of migration process.
Anyone have this problem or a solution?
The manual accompanying the MacBook says:
"*Gigabit Ethernet port
Connect to a high-speed Ethernet network, a DSL or Cable modem, or another computer. The Ethernet port automatically detects Ethernet devices and doesn't require an Ethernet crossover cable."
I definitely had these two computers directly connected with a working CAT6 Ethernet cable.
What am I doing wrong?

I have lost the correct proxy settings for the ethernet connection using Safari. How do I get back to the original ethernet proxy settings?

I changed the ethernet proxy settings for Safari on my Mac Pro, when I was in a particular place that required extra security. Now I cannot get the ethernet connection to work when back home. The wireless connection works fine. What are the original ethernet proxy settings. How do I make the changes?
Thanks

From your Safari menu bar click Safari / Preferences then select the Advanced tab. Click Change Settings next to Proxies. Select Automatically from the Configure pop up menu.
You may also have to select the Proxies tab. If any of the boxes are selected, deselect then click OK.

Ethernet connection repair on G3 B&W

After lightning struckour driveway, I have lost the ability to connect to the internet. Other applications are working. My other mac connects fine. What do I need to repair the ethernet connection?

Hi, Jimbo -
Welcome to Apple's Discussions.
How is the machine connected to the net? Dialup, or broadband? If broadband, is it through a hub, switch, or router?
Start by checking the hardware items not shared by the other machine - for example, if a common router is used, and the other machine connects, the router is probably okay. Just to be sure, though, try using the port on it that the other Mac uses - sometimes a voltage surge can blow out just one port on a device such as a router.
In particular, check all cables - swapping out with known-good ones is often the easiest way.

Lost Wireless Connection Again

Out of the blue in the middle of loading a web site, I lost wirless connection and nothing would make it reconnect. (turning ariport card off and on, sleep, diagnostics, etc) Connetion status went grey as well.
However, I was able to plug an eithernet cable in and when launching Safari, it brought up diagostics again but connected via ethernet. After about a minute of use, I unplugged the ethernet and I remained on. When connected via ethernet, the airport strength indicator went back again - that is why I unplugged the ethernet cable.
Important to note that I did NOT reboot the router.
Odd for sure.
MacBook Mac OS X (10.4.8)
MacBook Mac OS X (10.4.8)

My point to read Problems with Your Internet Connection in user guide.
Well,try to find something better.
By the way.
2. Submissions
Search or browse for existing answers before you ask a question. Someone else may have asked your question — it may save you some time.
Apple Discussions Use Agreement
http://discussions.apple.com/help.jspa#adua

Lost internet connection..."A connection time out occurred"

I've read a number of recent threads blaming Lion for lost wireless internet connections. I wish my problem was that simple.
I have an AT&T furnished Siemens SpeedStream 4100 modem connected via ethernet cable to a Netgear 3500 router providing a wireless network. This configuration worked without problem for over six months serving an iBook G4 (OS X 10.4) replaced by an iMac (OS X 10.7) in mid August, Lenovo Thinkpad (Windows 7), iPhone 3GS, and occasionally a MacBook (OS X 10.5) and a MacBook Pro (OS X 10.6). Then last week my iMac lost internet connectivity and displayed a dialog box saying:
"Could not join NETWORK NAME. A connection timeout occurred."
At the same time, my iPhone lost its WiFi connection to my network, and could not reconnect; and the Thinkpad could no longer find my wireless network.
Thinking the problem was with the Netgear router, I substituted my 6 year old Apple Airport Express in the same configuration, but with a different wireless network name. (I had used this network setup successfully for over five years before replacing the Airport Express with the Netgear router in February.) The Airport Express network worked on both computers and my iPhone for a couple of days before I again lost internet connectivity exactly as I had with the Netgear router.
I called AT&T, thinking the Siemens modem must be at fault, since a problem with that one device seemed more likely than successive failures of two different routers within a few days of each other, or a simultaneous problem with a Mac, PC and iPhone. AT&T said their modem checked out problem free. I have now connected my iMac directly to the Siemens modem with an ethernet cable and have a problem free wired internet connection.
I need my wireless network. Any thoughts on what happened to my WiFi?

AppleSince86 ... we have this same problem with a wired version of 802.1x
It appears if a user updates their password (perhaps their login screen prompts this to do this)... the underlying eapolclient will still use the old outdated password to reauthenticate upon the next x min refresh interval.
This will basically kick the user off line.
Two things could really improve this process:
1) When the operating system reauthenticates for network access... use the absolute most current version of a users password
2) Timeout handling seems much more wonky in 10.7 / 10.8 ... could probably shorten all of the timeouts up a great deal... no need to wait 30 seconds error out... in reality... if you haven't heard back in 5 seconds, you're not going to.
Unfortunately, I haven't found any configuration files to control this from our end... it appears to be the compiled behavior of the apple code

Lost ethernet connectivity

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