Here is the list of add-ons in FF:
The Plugins are - in the main - installed at the same time as Firefox and form a fundamental part of the browser (for good or bad)
If you have disabled some/all of them that could "potentially" cause problems as the site may be looking for them.
Another option would be to close Firefox and move your .mozilla folder somewhere safe.
Then when Firefox is next started it will create a brand new folder
Have you tried reinstalling the flash-player-plugin?
Are you running KWin or Compiz, and if so do they seem to work okay?
Okay it took me a while but I did reinstall Flash using Synaptic (I did a complete removal first).
I also renamed the .mozilla folder.
I lost all of my bookmarks when I restarted FF but that's okay, all in the name of tracking down this bug.
Well guess what... FF crashed yet again!
I have noticed that it does not crash as often after FF updated to 6.0.2 but that was before I did the steps above.
Sometimes it just hangs my computer and have to do a hard reset, sometimes REISUB works.
I've had it crash with all of the Plugin's disabled, with all of the plugin's enabled, with some of them enabled and some of them disabled.
I really like PCLinuxOS, but this daily crashing is very frustrating!
I want my old rock solid stable system back!
Any help in overcoming this will be greatly appreciated!