i'm having the same problem *if* beryl is enabled. i think this should not be assigned to Mozilla team until confirmed?
** Changed in: firefox (Ubuntu) Assignee: Mozilla Team => (unassigned) -- Firefox freezes Ubuntu Suddenly - Reboot needed https://launchpad.net/bugs/83132 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs