Bugzilla.gnome.org currently runs a modified 2.16. It mostly does what we want, except for some of the niceties a newer Bugzilla will provide (search as RSS, better written code, …). The test version of the new Bugzilla can be seen at http://bugzilla-test.gnome.org/. Upcoming changes can be seen at http://live.gnome.org/BugzillaUpgrade, new suggestions are welcome. Current status of the upgrade will be tracked via http://live.gnome.org/BugzillaUpgrade/UpgradeStatus.