This seems to be happening to quite a few Precise users as we can see at errors.ubuntu.com:
http://10.0.3.97/bucket/?id=%2Fusr%2Fbin%2Fupdate- manager%3AUnboundLocalError%3A_on_config_file_conflict%3Arun%3Ashow_diff -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1120322 Title: update-manager crashed with UnboundLocalError in show_diff(): local variable 'line_number' referenced before assignment To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/aptdaemon/+bug/1120322/+subscriptions -- ubuntu-bugs mailing list [email protected] https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
