I've hit the same bug when upgrading tonight. I was able to upgrade after some runs of "apt-get install -f" and "apt-get dist-upgrade". I'm attaching my logs since they seem to be better. They show the update- manager crash.
** Attachment added: "main log" http://librarian.launchpad.net/4323845/main.log -- Cannot upgrade from dapper to edgy https://launchpad.net/bugs/61001 -- ubuntu-bugs mailing list ubuntu-bugs@lists.ubuntu.com https://lists.ubuntu.com/mailman/listinfo/ubuntu-bugs
