I also ran into this bug. It happened to me as soon as I rebooted after an interrupted release upgrade from Oneiric to Precise (which made me switch to a terminal and finish the upgrade manually).
(X crash due to Debian bug #624500 affecting the monkeysphere- validation-agent package, breaking the dist-upgrade when responding 'yes' to a monkeysphere-validation-agent prompt asking whether I wanted to restart this daemon since it had detected changes to some of its dependencies) -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/985969 Title: update-manager crashed with RuntimeError in /usr/lib/python2.7/dist- packages/gi/overrides/Gtk.py: Gtk couldn't be initialized To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/985969/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs