The forums are experiencing some problems right now
Often, the first time you do anything (hit a page, reply to a topic, etc), page never loads fully, stopping on a white 'done' page. This causes most people to re-submit their posts, causing tons of double and even triple posts.
I'm working on fixing this, so don't worry. We don't chastise people for errors caused by the database, so all the doube-posts and such aren't an issue right now.
I'll give you another update tonight when I get off work.
Update #3: So it seems I lied about the whole 'dont re-submit after a blank screen' thing. Please
do re-submit new posts and replies please. We'll just delete any stray double-posts.
Update #4: Optimizing and repairing the SQL tables didn't fix the problem, although it
seems to have reduced the frequency of the issue.