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Firefox keeps crashing when launched (error message included)

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I am trying to fix my friend's computer and both IE8 and Firefox get errors when they are launched. I managed to get IE8 to work once in xp's safemode by allowing it to disable a certain plugin but Firefox still won't work properly. I've gotten it to start in firefox's safemode but it is extremely slow loading webpages and sometimes doesn't load all the information (links, etc.) I also tried reinstalling Firefox and still had issues. I'm hoping one of you can help me glean some useful information from message I grabbed from the crash reporter's details.

Add-ons: {3f963a5b-e555-4543-90e2-c3908898db71}:8.5.0.429,avg@igeared:3.011.025.005,moveplayer@movenetworks.com:7, :2.2.0.102,{635abd67-4fe9-1b23-4f01-e679fa7484c1}:1.6.6.20090220,{972ce4c6-7e08-4474-a285-3208198ce6fd}:3.6.3 BuildID: 20100401080539 CrashTime: 1273113016 EMCheckCompatibility: true FramePoisonBase: 00000000f0de0000 FramePoisonSize: 65536 InstallTime: 1270274135 ProductName: Firefox ReleaseChannel: release SecondsSinceLastCrash: 307 StartupTime: 1273112997 Theme: classic/1.0 Throttleable: 1 URL: about:blank Vendor: Mozilla Version: 3.6.3

This report also contains technical information about

I am trying to fix my friend's computer and both IE8 and Firefox get errors when they are launched. I managed to get IE8 to work once in xp's safemode by allowing it to disable a certain plugin but Firefox still won't work properly. I've gotten it to start in firefox's safemode but it is extremely slow loading webpages and sometimes doesn't load all the information (links, etc.) I also tried reinstalling Firefox and still had issues. I'm hoping one of you can help me glean some useful information from message I grabbed from the crash reporter's details. Add-ons: {3f963a5b-e555-4543-90e2-c3908898db71}:8.5.0.429,avg@igeared:3.011.025.005,moveplayer@movenetworks.com:7, :2.2.0.102,{635abd67-4fe9-1b23-4f01-e679fa7484c1}:1.6.6.20090220,{972ce4c6-7e08-4474-a285-3208198ce6fd}:3.6.3 BuildID: 20100401080539 CrashTime: 1273113016 EMCheckCompatibility: true FramePoisonBase: 00000000f0de0000 FramePoisonSize: 65536 InstallTime: 1270274135 ProductName: Firefox ReleaseChannel: release SecondsSinceLastCrash: 307 StartupTime: 1273112997 Theme: classic/1.0 Throttleable: 1 URL: about:blank Vendor: Mozilla Version: 3.6.3 This report also contains technical information about

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As a heads up, the information not in the description section aren't for the computer that is having trouble but for my computer, which is working fine.

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We're Sorry

Firefox had a problem and crashed. We'll try to restore your tabs and windows when it restarts.

To help us diagnose and fix the problem, you can send us a crash report.

The above is the beginning of the Crash Message shown when launching Firefox.