My web server was upgraded recently, and while they claimed my databases would not be affected, they definitely have been. I'll have to work on this today and see what's going on. Hopefully I haven't lost too much data and can get things running again soon.
EDIT: Everything "should" be fine now (and incidentally should be much more responsive after the upgrade). Feel free to resume normal forum activity.
EDIT AGAIN: This is really starting to piss me off. Found out people couldn't register due to database problems, tried to fix it, and now everything's hosed again. Getting real sick of my web hoster right now.