Same here... it is surely a bug of Ubuntu, as it is not closing Firefox correctly causing a system error and not a Firefox error
** Attachment added: "Crash Report" http://librarian.launchpad.net/6806119/_usr_lib_firefox_firefox-bin.PAZKgd.crash -- Crash Report triggered by shutting down Ubuntu with Firefox Open https://launchpad.net/bugs/71241 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
