When loading a website with some sort of Flash content or certain embedded video, Windows generates a crash error (error signature details below). I'm using the latest Adobe Flash plugin (9.0.124) and if I load a website with certain content, it crashes. Example websites include viddler.com and xbox360fanboy.com.

All I do is type the web address in and hit enter, then while loading, if the "questionable" content is on the page, it crashes. The Windows error signature is:

AppName: firefox.exe AppVer: 1.8.20080.40413 ModName: vsourcefilter.ax
ModVer: 5.6.5.3 Offset: 00002e70

I've tried disabling all extensions and it doesn't work. Only time that I don't get a crash with these websites is when I uninstall the Adobe Flash Player completely, which led me to believe that there is a conflict with it somewhere.

Extensions installed:

Adblock Plus (currently disabled)
2old2play
Skype Extension
Yahoo! Mail Notifier

Plugins installed:

• Default Plug-in
• The QuickTime Plugin allows you to view a wide variety of multimedia content in Web pages. For more information, visit the QuickTime Web site.
• Adobe PDF Plug-In For Firefox and Netscape
• np-mswmp
• Office Plugin for Netscape Navigator
• Shockwave Flash 9.0 r124
• Adobe Shockwave for Director Netscape plug-in, version 11.0
• iTunes Detector Plug-in
• Yahoo Application State Plugin
• 1.0.30109.0
• Java Plug-in 1.6.0_05 for Netscape Navigator (DLL Helper)
• Npdsplay dll
• DRM Netscape Network Object
• DRM Store Netscape Plugin