The bug tracker is now working again! I've taken the opportunity to upgrade to Bugzilla 4.0 as well. If you have any problems, please post here.
If you've forgotten, the URL is https://bugs.alliedmods.net/
In other news, AlliedModders will be moving to a new home in a few weeks. I have ordered three new servers that we will be colocating in northern California. I will post more once we're close to the move.