Today things went a lot further before failing with package authentication issues. This leads me to suspect the main source of problems is Bug #33505 or similar.
/etc/apt/sources.list.d/prerequists-sources.list no longer exists but did get replaced during the upgrade with one using the AU mirror. ** Attachment added: "Latest contents of /var/log/dist-upgrade" http://launchpadlibrarian.net/9519420/dist-upgrade.tar.gz -- Prerequisites download mirror guessing incorrect https://bugs.launchpad.net/bugs/144920 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
