I have the same issue. After fresh install of Xubuntu 7.1, immediate upgrade to 8.04 failed with the message
"Could not calculate the upgrade A unresolvable problem occurred while calculating the upgrade." etc. Machine is Sony Viao PGC962C laptop Attached are log files. ** Attachment added: "apt.log" http://launchpadlibrarian.net/14624351/apt.log -- do-release-upgrade fails during upgrade from gutsy to hardy on xubuntu https://bugs.launchpad.net/bugs/226825 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