I'm not entirely convinced this is a bug with the kernel. It seems to me that when you cancel the exit, the shorcut key bindings are somehow being modified to reboot the system rather than restart X.
-- ctrl+alt+backspace sometimes reboots instead of restarting X https://bugs.launchpad.net/bugs/204423 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs