Thanks for your report. Please install all updates fron oneiric-updates and try the upgrade again. Before the upgrade verify that apt 0.8.16~exp5ubuntu13.3 is installed on your system. Attach the content of /var/log/dist-upgrade if it fails again. Thanks
** Changed in: update-manager (Ubuntu) Status: New => Incomplete -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/992685 Title: Upgrade 11.10 to 12.04 fails on multiple machines (related to libjpeg8?) To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/992685/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs