Seems we're having some HTTP 500 (internal server error) problems again, you may see this either when accessing the boards themselves or as a database (MySQL) error. I'm getting on at my host to find out what's wrong and get it sorted out, but in the mean time I just wanted to let everyone know that these are temporary; usually coming back in a half or so will do the trick.
Just a reminder, but you may also sometimes receive this error if you double click a button by accident, for example when posting a message, which is normal since the server rejects duplicate requests. If you do get a 500 error and think you may have double clicked then it's usually safe to just go back and try again, but please do have a look to make sure the first request didn't go through, otherwise you can end up double posting
Anyway, thanks for your patience, I'm hoping to get the issue resolved soon!