The server actually seems up again. And hopefully we'll be able to fix the permission problem and the forums might come back. Don't loose all hope (yet)!
We have a clue how that happened, but we're still investigating why it happened. We will probably release information about the incident after investigation completes. (Oh, seriously... Did I say anything meaningful at all?)
Why not just post here? The main goal is to reroute all posts here, so that Admins and such have more control. If you keep posting on the old forums, that just defeats the purpose of new forums