*** This bug is a duplicate of bug 1279762 *** https://bugs.launchpad.net/bugs/1279762
and actually, I just now realized that I successfully ran do-release- upgrade 12.04 to 14.04 on a couple of other machines that also run openssh-server and have libkrb5-3 , with no problems, so my machine with this same bug may have a different issue. -- You received this bug notification because you are a member of Ubuntu Bugs, which is subscribed to Ubuntu. https://bugs.launchpad.net/bugs/1357566 Title: Could not calculate upgrade from 12.04LTS to 14.04.1LTS To manage notifications about this bug go to: https://bugs.launchpad.net/ubuntu/+source/update-manager/+bug/1357566/+subscriptions -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs