Georg Pfeifer, thank you for reporting this bug to Ubuntu. Lucid Desktop reached EOL on May 9, 2013. See this document for currently supported Ubuntu releases: https://wiki.ubuntu.com/Releases .
If an upgrade would be possible for you, you will need to uninstall any PPAs and proprietary software packages (ex. nvidia), as well as remove the sources for any PPAs, prior to attempting an upgrade. If this doesn't work, you will want to backup your data, and do a new install of a supported release via http://releases.ubuntu.com/ . Do feel free to report any other bugs you may find. Helpful bug reporting tips: https://wiki.ubuntu.com/ReportingBugs ** Changed in: update-manager (Ubuntu) Status: New => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1394401 Title: Upgrade from 10.04 to 12.04 failed To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/1394401/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
