It's actually behaving pretty well today, but for much of the last 2-3 days, the forum software was behaving very sluggishly. Trying to open posts might take 2-3 minutes, and would sometimes fail. Several times when trying to post a reply, I'd get a forum-generated spinny circle (not a Windows spinny blue circle), and then after a couple of minutes the forum would pop up a pink box that said something along the lines of "the forum software is not responding, try again later". However, if I reloaded the thread, I would find that my reply did get posted.
I saw someone else recently delete a duplicate post with a note that they got the same error message and so they submitted a second reply before realizing the first one actually made it.
Hope it was just a temporary thing for a couple of days and it'll never happen again, but I wanted to mention it for the record just in case AP didn't notice it.