I had a look into my logfile again and noticed, that this happens before dpkg is updated!
dpkg-query is failing because it does not know about triggers. This causes python-central to be unable to parse the package-status. Update dpkg before using triggers! ** Changed in: update-manager (Ubuntu) Status: Incomplete => Confirmed -- Update to gutsy failed https://bugs.launchpad.net/bugs/146943 You received this bug notification because you are a member of Ubuntu Bugs, which is the bug contact for Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs