I just recreated this bug. I too did the same thing. Logged into guest session and as soon as I switched back, the update-notifier crashed. Trying to start update-notifier from the command line did not help. It produced nothing on the terminal nor did it launch
-- update-notifier crashed with SIGSEGV in __libc_start_main() https://bugs.launchpad.net/bugs/285583 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