Thanks for reporting this bug and help in making Ubuntu better, and sorry for the long time without a response. The issue reported seems related to a temporary inconsistent state of the repositories during the development phase of Quantal.
** Changed in: ubuntu-release-upgrader (Ubuntu) Status: Confirmed => Invalid -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1057849 Title: Trying to upgrade to 12.10 To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/ubuntu-release-upgrader/+bug/1057849/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs