I ran into this same problem trying to upgrade from edgy to feisty. Here's my main.log in case it'll help.
** Attachment added: "dist-upgrade/main.log" http://librarian.launchpad.net/6364015/main.log -- [feisty] Crash on dist-upgrade https://launchpad.net/bugs/81584 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
