The original symtoms are simmiliar to what I am seeing and have reported in bug #1189645.
Running a mainline kernel helped: http://kernel.ubuntu.com/~kernel- ppa/mainline/v3.8.13.2-raring/ -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1117499 Title: killall -9 firefox fails to work in raring To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1117499/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
