Our ISP is doing a major site migration on November 27. The site will be down for up to an hour on that day. There is a slight chance that if you post a message on that day and the migration happens immediately after that the message may not show up on the forums. If that is the case simply resubmit the messages you posted.
The migration should be short and painless. I just didn't want anybody to think that we were deleting messages.