Bugzilla will move to a different server on Friday 7 July at 21:00 UTC. If you want to know what time that is for your location, look here. The move should not take more than 30 minutes, including DNS update (refresh time has already been shortened to prepare for the move). For those with broken DNS servers I will announce another name here + on the old server to reach bugzilla.gnome.org after the move has been completed (it will not work reliably before everything has been moved over).
I am now an upstream Bugzilla developer. Checking their Getting CVS Write Access feels a bit overwhelming. Getting GNOME CVS access was much easier (ok, I just dislike the faxing part).