As promised, I’ve uploaded a new Ubuntu package to the PPA that is compatible with Ubuntu 10.04. This package doesn’t have any new features, but does remove the dependency on the python-gnome2-extras package that was removed in Lucid.
The new package hasn’t been extensively tested, so file a bug report if there are any installation bugs.
UPDATE (6/14/10): A minor bug slipped in with the last update, so there’s a new package available on the PPA. It should be posted within the next few hours.