Recurrent near-freeze every week

Question

For months now, I've been experiencing a troubling near-freeze once a week. It occurs every Friday between 2 and 2:30 PM ET and lasts about 30 minutes. During that freeze, I lose all control of the iMac. At the time, I am running Safari 4.0.5, Mail, and an old version of Filemaker Pro (except for FMP, everything on this iMac is current versions, and the freeze happens when FMP is not running so we can eliminate that as a cause).
Typically, I can't quit any running program, can't launch any program (including Activity Monitor, which makes it difficult to know what's happening), and can't even force quit anything -- the iMac just fails to respond. I don't hear any drive access going on (though that's sometimes hard for me to hear anyway). After roughly a half hour, the computer will start to respond again and all programs work normally. (On a few occasions, when I wasn't home in the afternoon and the computer was on but not running any apps, I think the same thing happened, but when I came home a couple of hours later, I found the Mac had crashed and there was a crash notice bouncing around the screen that required a restart; I'm not positive these are related, but they probably are.)
I don't have anything weird on this computer. It took me quite a while to figure out that this near-freeze was happening on a very regular schedule. I thought it might have been a Sotlight (okay...that was an accidental typo, but I think Sotlight fits pretty well so I'll leave it) index update procedure, so I stayed up late one night to run that update and reset the schedule, but it hasn't had any effect on the freezing.
Can anybody suggest anything else I should look at, or any other way to determine what might be causing this?

Answer 1

After weeks of additional testing, I seem to be no closer to finding the solution to this recurring problem. To recap: every Tuesday at around 6:30 PM ET and every Friday at 2:05 PM ET, my Mac goes into hibernation. I can move windows around, but any attempt to do anything else or to quit any of the programs results in the spinning beach ball. Eventually -- and I mean after 5 to 10 minutes -- the Mac might respond, or might not. But between 30 and 45 minutes after the freeze occurs, the Mac will suddenly return to normal.
I've run Activity Monitor, launching it (and quitting all other programs) about 5 minutes before I know the shutdown will occur. The only items reported to be using any CPU time are: pmTool, virusbarriers (2 of them?), virusbarrierd, mds, SystemUIServer, Window Server, kernel_task and QuicKeys, and none of them appear unusually active. But when I try to quit Activity Monitor, the spinning beachball appears and the program will not quit.
I tried console. Here's what it reports, starting about 15 minutes before the freeze:
Jun 11 13:46:59 deacon-maccubbins-imac kernel[0]: mDNSResponder 17 FSREADDATA SBF /Library/Keychains/Intego.keychain 13 (seatbelt)
Jun 11 13:47:29: --- last message repeated 9 times ---
Jun 11 13:47:57 deacon-maccubbins-imac kernel[0]: mDNSResponder 17 FSREADDATA SBF /Library/Keychains/Intego.keychain 13 (seatbelt)
Jun 11 13:48:27: --- last message repeated 4 times ---
Jun 11 14:00:00 deacon-maccubbins-imac Alarm Clock[149]: AlarmTasks: Alarm should sound!
Jun 11 14:00:00 deacon-maccubbins-imac Alarm Clock[149]: Parsing iTunes Music Library...
Jun 11 14:00:00 deacon-maccubbins-imac Alarm Clock[149]: Found iTunes library: /Users/deaconmac/Music/iTunes/iTunes Music Library.xml
Jun 11 14:00:00 deacon-maccubbins-imac Alarm Clock[149]: Done parsing (time: 0.091819 seconds)
Jun 11 14:00:00 deacon-maccubbins-imac Alarm Clock[149]: Setting alarm with defaultAlarmFile
Jun 11 14:00:06 deacon-maccubbins-imac Alarm Clock[149]: Stopping alarm...
Jun 11 14:00:06 deacon-maccubbins-imac Alarm Clock[149]: Destroying <AlarmController: 0x14ff00>
[NOTE: The above Alarm Clock calls are normal and were used to alert me that it was about time for the freeze]
Jun 11 14:02:53 deacon-maccubbins-imac mDNSResponder[17]: KQ SSLHandshake failed: -9838
Jun 11 14:03:23: --- last message repeated 1 time ---
Jun 11 14:03:47 deacon-maccubbins-imac kernel[0]: mDNSResponder 17 FSREADDATA SBF /Library/Keychains/Intego.keychain 13 (seatbelt)
Jun 11 14:04:17: --- last message repeated 4 times ---
[NOTE: I believe this is where the freeze occurs]
Jun 11 14:07:05 deacon-maccubbins-imac kernel[0]: disk0s2: I/O error.
[NOTE: So I've forced-quit the Mac, making sure there was no sound of disk accessing first, then restarted]
Jun 11 14:10:42 localhost kernel[0]: npvhash=4095
Jun 11 14:10:38 localhost com.apple.launchctl.System[2]: fsck_hfs: Volume is journaled. No checking performed.
Jun 11 14:10:38 localhost com.apple.launchctl.System[2]: fsck_hfs: Use the -f option to force checking.
Jun 11 14:10:42 localhost com.apple.launchctl.System[2]: launchctl: Please convert the following to launchd: /etc/mach_init.d/dashboardadvisoryd.plist
Jun 11 14:10:42 localhost com.apple.launchd[1] (com.apple.RemoteDesktop.PrivilegeProxy): Unknown key for boolean: EnableTransactions
Jun 11 14:10:42 localhost com.apple.launchd[1] (com.apple.usbmuxd): Unknown key for boolean: EnableTransactions
Jun 11 14:10:42 localhost com.apple.launchd[1] (org.cups.cups-lpd): Unknown key: SHAuthorizationRight
Jun 11 14:10:42 localhost com.apple.launchd[1] (org.cups.cupsd): Unknown key: SHAuthorizationRight
Jun 11 14:10:42 localhost com.apple.launchd[1] (org.ntp.ntpd): Unknown key: SHAuthorizationRight
Jun 11 14:10:42 localhost com.apple.launchd[1] (org.x.privileged_startx): Unknown key for boolean: EnableTransactions
Jun 11 14:10:42 localhost DirectoryService[11]: Launched version 5.8.1 (v514.27)
Jun 11 14:10:42 localhost kernel[0]: hi mem tramps at 0xffe00000
Jun 11 14:10:42 localhost DirectoryService[11]: Improper shutdown detected
Jun 11 14:10:42 localhost kernel[0]: PAE enabled
Jun 11 14:10:42 localhost kernel[0]: 64 bit mode enabled
Jun 11 14:10:42 localhost kernel[0]: Darwin Kernel Version 9.8.0: Wed Jul 15 16:55:01 PDT 2009; root:xnu-1228.15.4~1/RELEASE_I386
Jun 11 14:10:42 localhost kernel[0]: standard timeslicing quantum is 10000 us
Jun 11 14:10:42 localhost kernel[0]: vmpagebootstrap: 970748 free pages and 77828 wired pages
Jun 11 14:10:42 localhost kernel[0]: migtable_maxdispl = 79
Jun 11 14:10:42 localhost kernel[0]: 106 prelinked modules
Jun 11 14:10:42 localhost kernel[0]: AppleACPICPU: ProcessorApicId=0 LocalApicId=0 Enabled
Jun 11 14:10:42 localhost kernel[0]: AppleACPICPU: ProcessorApicId=1 LocalApicId=1 Enabled
Jun 11 14:10:42 localhost kernel[0]: Loading security extension com.apple.security.TMSafetyNet
Jun 11 14:10:42 localhost kernel[0]: calling mpopolicyinit for TMSafetyNet
Jun 11 14:10:42 localhost kernel[0]: Security policy loaded: Safety net for Time Machine (TMSafetyNet)
Jun 11 14:10:42 localhost kernel[0]: Loading security extension com.apple.nke.applicationfirewall
Jun 11 14:10:42 localhost kernel[0]: Loading security extension com.apple.security.seatbelt
Jun 11 14:10:42 localhost kernel[0]: calling mpopolicyinit for mb
Jun 11 14:10:42 localhost kernel[0]: Seatbelt MACF policy initialized
Jun 11 14:10:42 localhost kernel[0]: Security policy loaded: Seatbelt Policy (mb)
Jun 11 14:10:42 localhost kernel[0]: Copyright (c) 1982, 1986, 1989, 1991, 1993
Jun 11 14:10:42 localhost kernel[0]: The Regents of the University of California. All rights reserved.
Jun 11 14:10:42 localhost kernel[0]: MAC Framework successfully initialized
Jun 11 14:10:42 localhost kernel[0]: using 16384 buffer headers and 4096 cluster IO buffer headers
Jun 11 14:10:42 localhost kernel[0]: IOAPIC: Version 0x11 Vectors 64:87
Jun 11 14:10:42 localhost kernel[0]: ACPI: System State [S0 S3 S4 S5] (S3)
Jun 11 14:10:42 localhost kernel[0]: mbinit: done
Jun 11 14:10:42 localhost kernel[0]: Security auditing service present
Jun 11 14:10:42 localhost kernel[0]: BSM auditing present
Jun 11 14:10:42 localhost kernel[0]: rooting via boot-uuid from /chosen: 84494C64-D88E-3C7C-BD8E-D8CCA0F94DDA
Jun 11 14:10:42 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>
Jun 11 14:10:42 localhost kernel[0]: wl0: Broadcom BCM432b 802.11 Wireless Controller
Jun 11 14:10:42 localhost kernel[0]: 5.10.91.19
Jun 11 14:10:42 localhost kernel[0]: Got boot device = IOService:/AppleACPIPlatformExpert/PCI0@0/AppleACPIPCI/SATA@B/AppleMCP79AHCI/PR T0@0/IOAHCIDevice@0/AppleAHCIDiskDriver/IOAHCIBlockStorageDevice/IOBlockStorageD river/WDC WD1001FALS-40K1B0 Media/IOGUIDPartitionScheme/Customer@2
Jun 11 14:10:42 localhost kernel[0]: BSD root: disk0s2, major 14, minor 2
Jun 11 14:10:42 localhost kernel[0]: jnl: unknown-dev: replay_journal: from: 64902144 to: 72739840 (joffset 0x1201c000)
Jun 11 14:10:42 localhost kernel[0]: FireWire (OHCI) Lucent ID 5901 built-in now active, GUID 002608fffe0558ba; max speed s800.
Jun 11 14:10:42 localhost kernel[0]: [HCIController][configurePM] power parent ready after 1 tries
Jun 11 14:10:42 localhost kernel[0]: AppleIntelCPUPowerManagement: initialization complete
Jun 11 14:10:42 localhost kernel[0]: jnl: unknown-dev: journal replay done.
Jun 11 14:10:42 localhost kernel[0]: HFS: Removed 4 orphaned unlinked files or directories
Jun 11 14:10:42 localhost kernel[0]: Jettisoning kernel linker.
Jun 11 14:10:42 localhost kernel[0]: Resetting IOCatalogue.
Jun 11 14:10:42 localhost kernel[0]: NVEthernet: Ethernet address 00:26:08:05:58:ba
Jun 11 14:10:42 localhost kernel[0]: GFX0: family specific matching fails
Jun 11 14:10:42 localhost kernel[0]: Matching service count = 1
Jun 11 14:10:42 localhost kernel[0]: AirPort_Brcm43xx: Ethernet address 00:26:08:ef:f1:2a
Jun 11 14:10:42 localhost kernel[0]: Matching service count = 2
Jun 11 14:10:42: --- last message repeated 4 times ---
Jun 11 14:10:42 localhost kernel[0]: Matching service count = 3
Jun 11 14:10:43 localhost kextd[10]: 422 cached, 0 uncached personalities to catalog
Jun 11 14:10:44 localhost kernel[0]: NVDANV50HAL loaded and registered.
Jun 11 14:10:44 localhost kernel[0]: Previous Shutdown Cause: 3
Jun 11 14:10:44 localhost kernel[0]: AppleTyMCEDriver::probe(iMac9,1)
Jun 11 14:10:44 localhost kernel[0]: AppleTyMCEDriver::probe fails
Jun 11 14:10:44 localhost kernel[0]: GFX0: family specific matching fails
Jun 11 14:10:44: --- last message repeated 2 times ---
Jun 11 14:10:44 localhost kernel[0]: Matching service count = 0
Jun 11 14:10:46 localhost mDNSResponder mDNSResponder-176.3 (Jun 17 2009 18:57:49)[17]: starting
Jun 11 14:10:47 localhost kernel[0]: NVEthernet::setLinkStatus - Valid but not Active
Jun 11 14:10:47 localhost kernel[0]: NVEthernet::mediaChanged - Link is down
Jun 11 14:10:47 localhost kernel[0]: NVEthernet::setLinkStatus - Valid but not Active
Jun 11 14:10:47 localhost kernel[0]: AirPort: Link Down on en1
Jun 11 14:10:47 deacon-maccubbins-imac configd[14]: AppleTalk startup
Jun 11 14:10:48 deacon-maccubbins-imac configd[14]: setting hostname to "deacon-maccubbins-imac.local"
Jun 11 14:10:48 deacon-maccubbins-imac mDNSResponder[17]: Adding registration domain deaconmac.members.mac.com.
Jun 11 14:10:48 deacon-maccubbins-imac kernel[0]: en1: 802.11d country code set to 'US'.
Jun 11 14:10:48 deacon-maccubbins-imac kernel[0]: en1: Supported channels 1 2 3 4 5 6 7 8 9 10 11 5 6 7 8 9 10 11 1 2 3 4 5 6 7 36 40 44 48 52 56 60 64 100 104 108 112 116 120 124 128 132 136 140 149 153 157 161 165 40 48 56 64 104 112 120 128 136 153 161 36 44 52 60
Jun 11 14:10:48 deacon-maccubbins-imac kernel[0]: Auth result for: 00:1f:f3:c2:84:e5 MAC AUTH succeeded
Jun 11 14:10:48 deacon-maccubbins-imac kernel[0]: AirPort: Link Up on en1
Jun 11 14:10:49 deacon-maccubbins-imac fseventsd[43]: event logs in /.fseventsd out of sync with volume. destroying old logs. (46044 17 46338)
Jun 11 14:10:49 deacon-maccubbins-imac bootlog[50]: BOOT_TIME: 1276279832 0
Jun 11 14:10:49 deacon-maccubbins-imac blued[51]: Apple Bluetooth daemon started.
Jun 11 14:10:50 deacon-maccubbins-imac kernel[0]: ALF ALERT: sockwallcntlupdaterules ctl_enqueuedata rts err 55
Jun 11 14:10:50 deacon-maccubbins-imac com.intego.netbarrier.daemon[58]: kextload serialization lock busy; sleeping (89 retries left)
Jun 11 14:10:49 deacon-maccubbins-imac /System/Library/CoreServices/loginwindow.app/Contents/MacOS/loginwindow[38]: Login Window Application Started -- Threaded auth
Jun 11 14:10:50 deacon-maccubbins-imac kernel[0]: ALF ALERT: sockwallcntlupdaterules ctl_enqueuedata rts err 55
Jun 11 14:10:50: --- last message repeated 1 time ---
Jun 11 14:10:50 deacon-maccubbins-imac rpc.statd[35]: statd.notify - no notifications needed
Jun 11 14:10:50 deacon-maccubbins-imac com.apple.usbmuxd[31]: usbmuxd-190 built for iTunesNineOne on Mar 8 2010 at 20:25:36, running 32 bit
Jun 11 14:10:50 deacon-maccubbins-imac kernel[0]: ALF ALERT: sockwallcntlupdaterules ctl_enqueuedata rts err 55
Jun 11 14:10:50 deacon-maccubbins-imac fseventsd[43]: log dir: /.fseventsd getting new uuid: 95096F19-A6E9-4880-8AEE-6EE8473D6DD3
Jun 11 14:10:50 deacon-maccubbins-imac kernel[0]: ALF ALERT: sockwallcntlupdaterules ctl_enqueuedata rts err 55
Jun 11 14:10:50 deacon-maccubbins-imac kernel[0]: ALF ALERT: sockwallcntlupdaterules ctl_enqueuedata rts err 55
Jun 11 14:10:50 deacon-maccubbins-imac kernel[0]: ALF ALERT: sockwallcntlupdaterules ctl_enqueuedata rts err 55
Jun 11 14:10:51: --- last message repeated 5 times ---
Jun 11 14:10:51 deacon-maccubbins-imac /usr/sbin/ocspd[73]: starting
Jun 11 14:10:51 deacon-maccubbins-imac com.intego.netbarrier.daemon[58]: kextload: /Library/StartupItems/NetBarrierKPI/NetBarrierKPI.kext loaded successfully
Jun 11 14:10:51 deacon-maccubbins-imac kernel[0]: ALF ALERT: sockwallcntlupdaterules ctl_enqueuedata rts err 55
Jun 11 14:10:52 deacon-maccubbins-imac org.ntp.ntpd[28]: Error : nodename nor servname provided, or not known
Jun 11 14:10:52 deacon-maccubbins-imac ntpdate[82]: can't find host time.apple.com
Jun 11 14:10:52 deacon-maccubbins-imac ntpdate[82]: no servers can be used, exiting
Jun 11 14:10:52 deacon-maccubbins-imac com.intego.netbarrier.daemon[58]: kextload: /Library/StartupItems/NetBarrierKPI/AppBarrierKPI.kext loaded successfully
Jun 11 14:10:53 deacon-maccubbins-imac configd[14]: AppleTalk startup complete
Jun 11 14:10:53 deacon-maccubbins-imac configd[14]: AppleTalk shutdown
Jun 11 14:10:53 deacon-maccubbins-imac configd[14]: AppleTalk shutdown complete
Jun 11 14:10:53 deacon-maccubbins-imac configd[14]: AppleTalk startup
Jun 11 14:10:59 deacon-maccubbins-imac configd[14]: AppleTalk startup complete
Jun 11 14:11:03 deacon-maccubbins-imac kextd[10]: writing kernel link data to /var/run/mach.sym
Jun 11 14:11:26 deacon-maccubbins-imac kernel[0]: mDNSResponder 17 FSREADDATA SBF /Library/Keychains/Intego.keychain 13 (seatbelt)
Jun 11 14:11:33: --- last message repeated 4 times ---
Jun 11 14:11:33 deacon-maccubbins-imac loginwindow[38]: Login Window Started Security Agent
Jun 11 14:11:33 deacon-maccubbins-imac authorizationhost[107]: MechanismInvoke 0x126c30 retainCount 2
Jun 11 14:11:33 deacon-maccubbins-imac SecurityAgent[108]: MechanismInvoke 0x102a50 retainCount 1
Jun 11 14:11:34 deacon-maccubbins-imac kernel[0]: hfs: early journal init: volume on disk1s3 is read-only and journal is dirty. Can not mount volume.
Jun 11 14:11:34 deacon-maccubbins-imac kernel[0]: hfs: early journal init: volume on disk2s3 is read-only and journal is dirty. Can not mount volume.
Jun 11 14:11:34 deacon-maccubbins-imac loginwindow[38]: Login Window - Returned from Security Agent
Jun 11 14:11:34 deacon-maccubbins-imac authorizationhost[107]: MechanismDestroy 0x126c30 retainCount 2
Jun 11 14:11:34 deacon-maccubbins-imac SecurityAgent[108]: MechanismDestroy 0x102a50 retainCount 1
Jun 11 14:11:35 deacon-maccubbins-imac loginwindow[38]: USER_PROCESS: 38 console
Jun 11 14:11:35 deacon-maccubbins-imac com.apple.launchd[1] (com.apple.UserEventAgent-LoginWindow[103]): Exited: Terminated
Jun 11 14:11:35 deacon-maccubbins-imac com.apple.launchd[123] (com.apple.AirPortBaseStationAgent): Unknown key for boolean: EnableTransactions
Jun 11 14:11:35 deacon-maccubbins-imac com.apple.launchd[123] (org.x.startx): Unknown key for boolean: EnableTransactions
Jun 11 14:11:35 deacon-maccubbins-imac /System/Library/CoreServices/coreservicesd[67]: SFLSharePointsEntry::CreateDSRecord: dsCreateRecordAndOpen(Deacon Maccubbin's Public Folder) returned -14135
Jun 11 14:11:36 deacon-maccubbins-imac kernel[0]: jnl: disk1s3: replay_journal: from: 13612544 to: 14300672 (joffset 0x8bd000)
Jun 11 14:11:36 deacon-maccubbins-imac kernel[0]: jnl: disk2s3: replay_journal: from: 23350784 to: 24073728 (joffset 0xe90000)
Jun 11 14:11:36 deacon-maccubbins-imac kernel[0]: jnl: disk2s3: journal replay done.
Jun 11 14:11:36 deacon-maccubbins-imac kernel[0]: jnl: disk1s3: journal replay done.
Jun 11 14:11:36 deacon-maccubbins-imac fseventsd[43]: event logs in /Volumes/OneTouch4 Plus/.fseventsd out of sync with volume. destroying old logs. (44890 1 46386)
Jun 11 14:11:36 deacon-maccubbins-imac fseventsd[43]: log dir: /Volumes/OneTouch4 Plus/.fseventsd getting new uuid: C546740E-7642-4614-A74A-2704576F89F2
Jun 11 14:11:36 deacon-maccubbins-imac fseventsd[43]: event logs in /Volumes/Maxtor HD 2/.fseventsd out of sync with volume. destroying old logs. (45965 1 46386)
Jun 11 14:11:37 deacon-maccubbins-imac Alarm Clock[163]: Initializing Prefs...
Jun 11 14:11:37 deacon-maccubbins-imac Alarm Clock[163]: Initializing AlarmScheduler...
Jun 11 14:11:37 deacon-maccubbins-imac Alarm Clock[163]: Initializing WindowManager...
Jun 11 14:11:37 deacon-maccubbins-imac Alarm Clock[163]: Initializing AlarmTasks...
Jun 11 14:11:37 deacon-maccubbins-imac Alarm Clock[163]: Registering for system power notifications...
Jun 11 14:11:37 deacon-maccubbins-imac Alarm Clock[163]: Ready
Jun 11 14:11:38 deacon-maccubbins-imac Alarm Clock[163]: .sdef error: Operation could not be completed. (NSXMLParserErrorDomain error 1549.)
Jun 11 14:11:38 deacon-maccubbins-imac Alarm Clock[163]: line number: 2
Jun 11 14:11:38 deacon-maccubbins-imac Alarm Clock[163]: .sdef error: Operation could not be completed. (NSXMLParserErrorDomain error 1549.)
Jun 11 14:11:38 deacon-maccubbins-imac Alarm Clock[163]: line number: 2
Jun 11 14:11:38 deacon-maccubbins-imac fseventsd[43]: log dir: /Volumes/Maxtor HD 2/.fseventsd getting new uuid: 5EBDD603-5CE3-41DB-A000-68AD8C6E85BB
Jun 11 14:11:38 deacon-maccubbins-imac aaaTypeIt4MeMenu[166]: main here, secureEvent is 0
Jun 11 14:11:38 deacon-maccubbins-imac QuicKeys[167]: .sdef error: Operation could not be completed. (NSXMLParserErrorDomain error 1549.)
Jun 11 14:11:38 deacon-maccubbins-imac QuicKeys[167]: line number: 2
Jun 11 14:11:38 deacon-maccubbins-imac mDNSResponder[17]: Failed to obtain NAT port mapping 00048CF8 from router 192.168.1.1 external address 0.0.0.0 internal port 5353 error 0
Jun 11 14:11:40 deacon-maccubbins-imac kernel[0]: mDNSResponder 17 FSREADDATA SBF /Library/Keychains/Intego.keychain 13 (seatbelt)
Jun 11 14:11:48: --- last message repeated 19 times ---
Jun 11 14:11:45 deacon-maccubbins-imac com.apple.launchd[123] ([email protected][127]): Exited with exit code: 1
Jun 11 14:12:02 deacon-maccubbins-imac mdworker[97]: (Error) SyncInfo: Boot-cache avoidance timed out!
Jun 11 14:14:38 deacon-maccubbins-imac kernel[0]: NVEthernet::setLinkStatus - Valid but not Active
Jun 11 14:14:38 deacon-maccubbins-imac kernel[0]: NVEthernet::mediaChanged - Link is down
Jun 11 14:14:38 deacon-maccubbins-imac kernel[0]: NVEthernet::setLinkStatus - Valid but not Active
Jun 11 14:14:42: --- last message repeated 1 time ---
Jun 11 14:14:42 deacon-maccubbins-imac kernel[0]: NVEthernet::mediaChanged - Link is down
Jun 11 14:14:42 deacon-maccubbins-imac kernel[0]: NVEthernet::setLinkStatus - Valid but not Active
Jun 11 14:16:03 deacon-maccubbins-imac /usr/sbin/ocspd[226]: starting
Jun 11 14:16:37 deacon-maccubbins-imac ntpd[28]: time reset +0.376018 s
Jun 11 14:20:19 deacon-maccubbins-imac kernel[0]: NVEthernet::setLinkStatus - Valid but not Active
Jun 11 14:20:19 deacon-maccubbins-imac kernel[0]: NVEthernet::mediaChanged - Link is down
Jun 11 14:20:19 deacon-maccubbins-imac kernel[0]: NVEthernet::setLinkStatus - Valid but not Active
Jun 11 14:20:23: --- last message repeated 1 time ---
Jun 11 14:20:23 deacon-maccubbins-imac kernel[0]: NVEthernet::mediaChanged - Link is down
Jun 11 14:20:23 deacon-maccubbins-imac kernel[0]: NVEthernet::setLinkStatus - Valid but not Active
Jun 11 14:20:27: --- last message repeated 1 time ---
Jun 11 14:20:27 deacon-maccubbins-imac kernel[0]: NVEthernet::mediaChanged - Link is down
Jun 11 14:20:27 deacon-maccubbins-imac kernel[0]: NVEthernet::setLinkStatus - Valid but not Active
Jun 11 14:23:45 deacon-maccubbins-imac kernel[0]: IOHIDSystem::relativePointerEventGated: Capping VBL time to 20000000 (was 34351501)
Jun 11 14:26:04 deacon-maccubbins-imac kernel[0]: NVEthernet::setLinkStatus - Valid but not Active
Jun 11 14:26:04 deacon-maccubbins-imac kernel[0]: NVEthernet::mediaChanged - Link is down
Jun 11 14:26:04 deacon-maccubbins-imac kernel[0]: NVEthernet::setLinkStatus - Valid but not Active
Jun 11 14:26:08: --- last message repeated 1 time ---
Jun 11 14:26:08 deacon-maccubbins-imac kernel[0]: NVEthernet::mediaChanged - Link is down
Jun 11 14:26:08 deacon-maccubbins-imac kernel[0]: NVEthernet::setLinkStatus - Valid but not Active
Jun 11 14:26:12: --- last message repeated 1 time ---
Jun 11 14:26:12 deacon-maccubbins-imac kernel[0]: NVEthernet::mediaChanged - Link is down
Jun 11 14:26:12 deacon-maccubbins-imac kernel[0]: NVEthernet::setLinkStatus - Valid but not Active
Jun 11 14:26:56 deacon-maccubbins-imac kernel[0]: mDNSResponder 17 FSREADDATA SBF /Library/Keychains/Intego.keychain 13 (seatbelt)
Jun 11 14:27:26: --- last message repeated 9 times ---
Jun 11 14:27:35 deacon-maccubbins-imac kernel[0]: mDNSResponder 17 FSREADDATA SBF /Library/Keychains/Intego.keychain 13 (seatbelt)
Jun 11 14:28:05: --- last message repeated 4 times ---
Jun 11 14:31:49 deacon-maccubbins-imac kernel[0]: NVEthernet::setLinkStatus - Valid but not Active
Jun 11 14:31:49 deacon-maccubbins-imac kernel[0]: NVEthernet::mediaChanged - Link is down
Jun 11 14:31:49 deacon-maccubbins-imac kernel[0]: NVEthernet::setLinkStatus - Valid but not Active
Jun 11 14:31:53: --- last message repeated 1 time ---
Jun 11 14:31:53 deacon-maccubbins-imac kernel[0]: NVEthernet::mediaChanged - Link is down
Jun 11 14:31:53 deacon-maccubbins-imac kernel[0]: NVEthernet::setLinkStatus - Valid but not Active
Can anyone shed any helpful light on what's causing these "scheduled" freezes?