Tilmann,
thanks for finding the package owners page. I'll replace it with a link to the package inventory page as well as try to update the package inventory page to reflect the current state of affairs.
I recently removed some packages from core and one or two maintainers can probably be moved over from Janine's doc. Also, I'd like to start moving some packages into an obsolete cvs directory, for example the superseeded photo album apps.
