I have the same problem. I just tried to upgrade 7.10 with a dist- upgrade, and it offered to do a partial upgrade which failed with 'could not calculate the upgrade' message, citing to report a bug against the 'update-manager' package and to include the files in /var/log/dist- upgrade/ in the bug report. Here they are:
** Attachment added: "apt.log" http://launchpadlibrarian.net/12264032/apt.log -- 7.10 gutsy distribution update not completed https://bugs.launchpad.net/bugs/138851 You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
