Just got this crash while updating 14.04 today, and the update-manager window became as shown in the snapshot.
** Attachment added: "Snapshot" https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/1202754/+attachment/4062150/+files/Screenshot%20from%202014-04-03%2008%3A13%3A49.png -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1202754 Title: update-manager crashed with SystemExit in exit(): 0 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntukylin/+bug/1202754/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs