*** This bug is a duplicate of bug 1279762 *** https://bugs.launchpad.net/bugs/1279762
I have successfully resolved this. I had to apt-get remove libkrb5-3 (which removed Postgres 8.3, but no problem for me), after that, the upgrade went smooth. -- 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