I have been using firefox fine, but after a reboot, it would show a error screen (attachment) I tried reinstalling but that still didn't work any ideas??
You likely have incompatible extensions being loaded from a previous installation of FireFox. I assume you recently upgraded FireFox or installed an extension. Anyway, here is a quick guide to resolving the problem:
After the fix, you will probably have to re-install any third-party FireFox extensions you use. However, verify the extensions are properly supported by the version of FireFox you are using.
I happened up on some FireFox reading while looking for some AMD CPU data... looks like there may be some good stuff here for those that use and tweak FireFox.