Not sure where you got the name ubiquity from for this - upgrades are typically handled using update-manager, and certainly those messages aren't from ubiquity (which is used to do fresh installs).
** Package changed: ubiquity (Ubuntu) => update-manager (Ubuntu) -- upgrade dvd hardy to jaunty many errors https://bugs.launchpad.net/bugs/393499 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
