Ubuntu
update-manager package

  1. Bug #774289
  2. Comment #5

Comment 5 for bug 774289

Revision history for this message
Wolfgang Kufner (wolfgangkufner) wrote :

This looks like a comprehensive list of upgrading choices. It seems the live CD can do it too since Natty:
http://askubuntu.com/questions/12909/how-do-i-upgrade-to-the-development-release-aka-ubuntu1

As for finding the root cause I have no idea. Sorry.