From pygtk.org: PyGobject 2.18.0 released Monday 25 May 2009 by Gian Mario Tagliaretti PyGobject 2.18.0 has been released, this is a stable release, the first of the 2.18.x series. As usual, it's sources can be fetched here. Check out the release announcement and full list of changes.
Bumped into the tree thanks for reporting ;)