I figured out. Firefox was crashing because of Colorzilla extension. Now I think someone should take a look at it, as crashing is not really the best way to tell „I don't like this extension“. ;)
BTW, as Colorzilla provides its own binary components, maybe Ubuntu could package it into a deb?.. -- Firefox segfaults in Feisty with a profile from Edgy https://launchpad.net/bugs/81964 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs