Yes. Someone started a new TSA thread. Now the ASA/Expressjet one is doing the same thing. I thought it was happening due to the "ghost pages" out there due to "not-quite-deleted" posts that we cannot see. But if you are having the same problem, and can see those "hidden-but-not-deleted" posts, then perhaps my thought was wrong.
At any rate, it might be beneficial to close that thread and start a new one. If there is a way for you to start the new thread with say 10-20 pages from the old thread, that would be way swoopy cool!!