Internet connection dropping out throughout day; problem NOT with provider

My computer's connection to the Airport Express base station has no problems at all. But the internet connection goes out literally dozens of times a day (at no predictable schedule); this has been happening for almost a month. I originally thought the problem was with the internet provider, but I'm now beginning to think that either my settings are wrong, or that I have a corrupt file somewhere. Here are the details:
I connect via a cable modem (Time Warner - Road Runner). I know people have had problems with Time Warner, so I assumed that was the issue; however I've had 3 service calls and they've checked signal strength inside and out, and swapped out the modem and the cables. I don't think it is simply problems in our geographic area (i.e. greater Los Angeles) due to the fact that the Internet fails sometimes 40-50 times daily, and the problem began when I upgraded from an old Airport base station to a brand new Airport Express about a month ago.
The airport/internet connection is shared 3 ways: two MacBook Pro computers and one iPhone. My Airport's internet settings are as follows:
Configure IPv4 using DHCP.
DNS Servers: 66.75.160.63 and 66.75.160.64 (note I have already tried swapping these for OpenDNS -- this did NOT solve the problem)
Domain name: socal.rr.com
DHCP Client ID: [blank]
Ethernet WAN port: Default-Automatic
Connection Sharing: Share a Public IP address
DHCP Beginning Address: 10.0.1.2
Ending Address: 10.0.1.200
DHCP Lease: 4 hours
NAT settings are all unchecked
One of the main reasons I believe that the problem is with my computer's settings or a corrupt file is that I can fix the problem whenever the Internet "goes down" almost 100% of the time by doing the following: after loading Airport Utility, I make ANY trivial change (i.e. changing the DHCP lease from 4 hours to 5 hours) and then click UPDATE to refresh the Airport base station. This fixes the problem almost 100% of the time. But then, anywhere from 10 minutes to 3 hours later, the Internet connection goes down again. [Unplugging the power from the modem, waiting 30 seconds, and plugging it back in ALSO fixes the problem almost 100% of the time, until it goes out again a little while later.]
Also, I have tried disconnecting Airport and connecting directly to the cable modem via Ethernet. The problem remains exactly the same -- I can connect, but then the connection fails soon after. Unplugging then replugging the modem fixes the problem temporarily. So I do not think the problem is a defective Airport base station, nor do I think it is the modem (which has been replaced), nor Time Warner.
I can't think of what else to try -- but any advice would be greatly appreciated -- it's impossible for us to work with the Internet constantly going out throughout the day, every day.
Thank you!

Just in case I'm missing something obvious, I am here pasting all CONSOLE messages that appear when I do a standard RESTART:
8/22/08 7:15:12 AM loginwindow[24] DEAD_PROCESS: 0 console
8/22/08 7:15:12 AM shutdown[128] reboot by mark:
8/22/08 7:15:12 AM shutdown[128] SHUTDOWN_TIME: 1219414512 407699
8/22/08 7:15:12 AM com.apple.loginwindow[24] Shutdown NOW!
8/22/08 7:15:12 AM com.apple.loginwindow[24] System shutdown time has arrived
8/22/08 7:15:12 AM mDNSResponder mDNSResponder-171.4 (Apr 20 2008 11:59:52)[23] stopping
8/22/08 7:15:12 AM com.apple.SystemStarter[17] Stopping Adobe Version Cue CS2
8/22/08 7:15:31 AM kernel npvhash=4095
8/22/08 7:15:31 AM com.apple.launchctl.System[2] launchctl: Please convert the following to launchd: /etc/mach_init.d/chum.plist
8/22/08 7:15:31 AM com.apple.launchctl.System[2] launchctl: Please convert the following to launchd: /etc/mach_init.d/dashboardadvisoryd.plist
8/22/08 7:15:31 AM com.apple.launchctl.System[2] launchctl: Please convert the following to launchd: /etc/mach_init.d/pilotfish.plist
8/22/08 7:15:31 AM com.apple.launchd[1] (com.adobe.versioncueCS3) Unknown key: ServiceDescription
8/22/08 7:15:31 AM com.apple.launchd[1] (com.apple.distccdConfigd) Unknown key: SHAuthorizationRight
8/22/08 7:15:31 AM com.apple.launchd[1] (org.cups.cupsd) Unknown key: SHAuthorizationRight
8/22/08 7:15:31 AM com.apple.launchd[1] (org.ntp.ntpd) Unknown key: SHAuthorizationRight
8/22/08 7:15:31 AM kextd[10] 413 cached, 0 uncached personalities to catalog
8/22/08 7:15:31 AM kernel hi mem tramps at 0xffe00000
8/22/08 7:15:31 AM kernel PAE enabled
8/22/08 7:15:31 AM kernel 64 bit mode enabled
8/22/08 7:15:31 AM kernel Darwin Kernel Version 9.4.0: Mon Jun 9 19:30:53 PDT 2008; root:xnu-1228.5.20~1/RELEASE_I386
8/22/08 7:15:31 AM kernel standard timeslicing quantum is 10000 us
8/22/08 7:15:31 AM kernel vmpagebootstrap: 972190 free pages and 76386 wired pages
8/22/08 7:15:31 AM kernel migtable_maxdispl = 79
8/22/08 7:15:31 AM kernel 98 prelinked modules
8/22/08 7:15:31 AM kernel AppleACPICPU: ProcessorApicId=0 LocalApicId=0 Enabled
8/22/08 7:15:31 AM kernel AppleACPICPU: ProcessorApicId=1 LocalApicId=1 Enabled
8/22/08 7:15:31 AM kernel Loading security extension com.apple.security.TMSafetyNet
8/22/08 7:15:31 AM kernel calling mpopolicyinit for TMSafetyNet
8/22/08 7:15:31 AM kernel Security policy loaded: Safety net for Time Machine (TMSafetyNet)
8/22/08 7:15:31 AM kernel Loading security extension com.apple.nke.applicationfirewall
8/22/08 7:15:31 AM kernel Loading security extension com.apple.security.seatbelt
8/22/08 7:15:31 AM kernel calling mpopolicyinit for mb
8/22/08 7:15:31 AM kernel Seatbelt MACF policy initialized
8/22/08 7:15:31 AM kernel Security policy loaded: Seatbelt Policy (mb)
8/22/08 7:15:31 AM kernel Copyright (c) 1982, 1986, 1989, 1991, 1993
8/22/08 7:15:31 AM kernel The Regents of the University of California. All rights reserved.
8/22/08 7:15:31 AM kernel MAC Framework successfully initialized
8/22/08 7:15:31 AM kernel using 16384 buffer headers and 4096 cluster IO buffer headers
8/22/08 7:15:31 AM kernel devfsmakenode: not ready for devices!
8/22/08 7:15:31 AM kernel IOAPIC: Version 0x20 Vectors 64:87
8/22/08 7:15:31 AM kernel ACPI: System State [S0 S3 S4 S5] (S3)
8/22/08 7:15:31 AM kernel mbinit: done
8/22/08 7:15:31 AM kernel Security auditing service present
8/22/08 7:15:31 AM kernel BSM auditing present
8/22/08 7:15:31 AM kernel rooting via boot-uuid from /chosen: 419B2954-20DC-3880-AFEB-448924F9BE09
8/22/08 7:15:31 AM kernel Waiting on <dict ID="0"><key>IOProviderClass</key><string ID="1">IOResources</string><key>IOResourceMatch</key><string ID="2">boot-uuid-media</string></dict>
8/22/08 7:15:31 AM kernel FireWire (OHCI) TI ID 8025 built-in now active, GUID 001d4ffffe5f8d30; max speed s800.
8/22/08 7:15:31 AM kernel Got boot device = IOService:/AppleACPIPlatformExpert/PCI0/AppleACPIPCI/SATA@1F,2/AppleICH8AHCI/PR T0@0/IOAHCIDevice@0/AppleAHCIDiskDriver/IOAHCIBlockStorageDevice/IOBlockStorageD river/ST9160823AS Media/IOGUIDPartitionScheme/Customer@2
8/22/08 7:15:31 AM kernel BSD root: disk0s2, major 14, minor 2
8/22/08 7:15:31 AM kernel Jettisoning kernel linker.
8/22/08 7:15:31 AM kernel Resetting IOCatalogue.
8/22/08 7:15:31 AM kernel GFX0: family specific matching fails
8/22/08 7:15:31 AM kernel Matching service count = 1
8/22/08 7:15:31 AM kernel Matching service count = 2
8/22/08 7:15:31 AM kernel Matching service count = 2
8/22/08 7:15:31 AM kernel Matching service count = 2
8/22/08 7:15:31 AM kernel Matching service count = 2
8/22/08 7:15:31 AM kernel Matching service count = 2
8/22/08 7:15:31 AM kernel Previous Shutdown Cause: 5
8/22/08 7:15:31 AM kernel NVDANV50HAL loaded and registered.
8/22/08 7:15:31 AM kernel ath_attach: devid 0x24
8/22/08 7:15:31 AM kernel GFX0: family specific matching fails
8/22/08 7:15:32 AM kernel Override HT40 CTL Powers. EEPROM Version is 14.4, Device Type 5
8/22/08 7:15:33 AM kernel mac 12.10 phy 8.1 radio 12.0
8/22/08 7:15:33 AM kernel CSRHIDTransitionDriver::start []
8/22/08 7:15:34 AM kernel CSRHIDTransitionDriver::switchToHCIMode legacy
8/22/08 7:15:36 AM bootlog[38] BOOT_TIME: 1219414527 0
8/22/08 7:15:36 AM rpc.statd[19] statd.notify - no notifications needed
8/22/08 7:15:37 AM com.apple.launchd[1] (com.apple.distccdConfigd[32]) Exited with exit code: 255
8/22/08 7:15:37 AM DirectoryService[34] Launched version 5.4 (v514.21)
8/22/08 7:15:37 AM fseventsd[28] bumping event counter to: 0x2e4ba71 (current 0x0) from log file '0000000002e4b394'
8/22/08 7:15:37 AM mDNSResponder mDNSResponder-171.4 (Apr 20 2008 11:59:52)[23] starting
8/22/08 7:15:38 AM kernel yukon: Ethernet address 00:1b:63:a2:29:d1
8/22/08 7:15:38 AM kernel AirPort_Athr5424ab: Ethernet address 00:1c:b3:c0:f5:49
8/22/08 7:15:38 AM /System/Library/CoreServices/loginwindow.app/Contents/MacOS/loginwindow[24] Login Window Application Started
8/22/08 7:15:38 AM com.apple.SecurityServer[20] Entering service
8/22/08 7:15:38 AM /usr/sbin/ocspd[62] starting
8/22/08 7:15:39 AM kernel 11D beacon causing regdomain change to CC 840
8/22/08 7:15:39 AM kernel en1: 802.11d country code set to 'US'.
8/22/08 7:15:40 AM kernel en1: Supported channels 1 2 3 4 5 6 7 8 9 10 11 36 40 44 48 52 56 60 64 149 153 157 161 165
8/22/08 7:15:39 AM configd[36] setting hostname to "Macintosh-3.local"
8/22/08 7:15:44 AM kernel USBF: 16.757 AppleUSBHubPort: Port 1 of Hub at 0x1a000000 about to terminate a busy device (IOUSBCompositeDevice) after waiting 10 seconds
8/22/08 7:15:44 AM kernel USBF: 17. 59 CSRHIDTransitionDriver[0x723ca80](IOUSBCompositeDevice) GetFullConfigDescriptor(0) returned NULL
8/22/08 7:15:44 AM kernel CSRHIDTransitionDriver... done
8/22/08 7:15:46 AM kernel AppleYukon2: 00000000,00000000 sk98osx_dnet - recovering from missed interrupt
8/22/08 7:15:46 AM org.ntp.ntpd[14] Error : nodename nor servname provided, or not known
8/22/08 7:15:46 AM ntpdate[70] can't find host time.apple.com
8/22/08 7:15:46 AM ntpdate[70] no servers can be used, exiting
8/22/08 7:15:53 AM kernel AppleYukon2: 00000000,00000000 sk98osx_dnet - recovering from missed interrupt
8/22/08 7:15:53 AM kernel AirPort: Link Up on en1
8/22/08 7:15:54 AM kextd[10] writing kernel link data to /var/run/mach.sym
8/22/08 7:16:02 AM loginwindow[24] Login Window Started Security Agent
8/22/08 7:16:02 AM SecurityAgent[88] User info context values set
8/22/08 7:16:02 AM SecurityAgent[88] Login Window done
8/22/08 7:16:02 AM loginwindow[24] Login Window - Returned from Security Agent
8/22/08 7:16:02 AM loginwindow[24] USER_PROCESS: 24 console
8/22/08 7:16:02 AM com.apple.launchd[1] (com.apple.UserEventAgent-LoginWindow[81]) Exited: Terminated
8/22/08 7:16:02 AM com.apple.launchctl.Aqua[91] launchctl: Please convert the following to launchd: /etc/machinit_peruser.d/com.adobe.versioncueCS3.monitor.plist
8/22/08 7:16:02 AM com.apple.launchctl.Aqua[91] launchctl: Please convert the following to launchd: /etc/machinit_peruser.d/RemoteUI.plist
8/22/08 7:16:03 AM com.apple.launchd[66] (0x101260.VersionCueCS3monitor) Failed to check-in!
8/22/08 7:16:03 AM /System/Library/CoreServices/coreservicesd[44] SFLSharePointsEntry::CreateDSRecord: dsCreateRecordAndOpen(Mark's Public Folder) returned -14135

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If someone answers your question correctly please let other members know by clicking on ’Mark as Accepted Solution’.

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1, 6 and 11 and are the only channels you should try.
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I recently signed up to a new deal with BT and had to pay for my HH4. I have it all connected up the exact same way as my HH3. I am receiving a faster connection now but am now getting VERY frequent internet connection drops....
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Shand359tbe wrote:
I forgot to state also that I since removed the HH4 and put my old trusty HH3 back into use......... it does the EXACT same thing now.........
BT engineer was out to fix the line in February of this year. A new main box was fitted (which I was billed for) and he also fitted an iplate to the box to allow the hub to be connected without the need for a filter since they are built in.......
an Iplate will not do away with any filters and they will be required on all sockets - unless you mean a filtered faceplate not iplate - 2 sockets 1 adls and 1 phone
If you like a post, or want to say thanks for a helpful answer, please click on the Ratings star on the left-hand side of the post.
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Wireless internet connection drops on battery

I've had my MacBook for 10 months or so now, and just recently it's started acting peculiarly. When it's on battery, the internet will drop out after 10-15 minutes of being online. Simply disabling the airport and re-enabling it will make it work for another 10-15 minutes. It only happens on battery, not when it's plugged in. I've tried all the usual fixes (updates, take out battery and hold power switch, etc.), but nothing seems to stop the problem.
Any ideas?

This is a fairly common complaint with 10.4.10.

Internet keeps dropping out!!!

Hi my internet keeps dropping out since about 6am this morning it probably has dropped out 15 times, was fine yesterday any ideas thanks ?
ADSL line status
Connection information
Line state
Connected
Connection time
0 days, 0:05:32
Downstream
4,672 Kbps
Upstream
888 Kbps
ADSL settings
VPI/VCI
0/38
Type
PPPoA
Modulation
ITU-T G.992.3
Latency type
Interleaved
Noise margin (Down/Up)
3.1 dB / 9.5 dB
Line attenuation (Down/Up)
48.0 dB / 26.0 dB
Output power (Down/Up)
0.0 dBm / 12.8 dBm
Loss of Framing (Local)
12
Loss of Signal (Local)
1
Loss of Power (Local)
0
FEC Errors (Down/Up)
45444 / 2
CRC Errors (Down/Up)
23 / N/A
HEC Errors (Down/Up)
N/A / 13
Error Seconds (Local)
47

Welcome to this customer to customer forum.
To enable forum members to help you, could you please read the web page that is shown below, which asks you to do a few checks first, and has some helpful hints.
When you have done that, please follow the instructions at the end, and post the results here, so members can offer advice. Thank you.
Speed and disconnections
There are some useful help pages here, for BT Broadband customers only, on my personal website.
BT Broadband customers - help with broadband, WiFi, networking, e-mail and phones.

My iPad Internet keeps dropping out

Hi
My iPad Internet keeps dropping out, I have other internet using machines and they are fine, I have changed my hub 4 times but it still keeps dropping.
It mainly drops if I am watching Netflix, but also just using the net but not as much, I have also changed the hub channel but it still does it.
Hope you can help
Thank you muchly x

Hello Traceykate,
Thanks for using Apple Support Communities.
To troubleshoot this issue with your iPad's WiFi connectivity, please follow the steps in the article below
iOS: Troubleshooting Wi-Fi networks and connections
http://support.apple.com/kb/TS1398
Take care,
Alex H.

Cannot update to latest software. error message states internet connection timed out

Does anyone have a similar problem? I cannot update to the latest software for my I Phone 4. The error message says, internet connection timed out. Which is obviously has not. It also says check your internet settings. I am not sure what that means. I have windows 7.

If the disabling the firewall doesnt help, then also try disabling your anti-virus, this was what was causing me an issue.
Although make sure you re-enable both your firewall and anti-virus after the update completes.

Internet connection dropping out throughout day; problem NOT with provider

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