Not quite . . . . 9:30-10:30 AM PST, posting a reply to a thread hangs for up to a minute, then returns the dreaded 500.
Back-button to thread, refresh, replies are being posted, just dying on the redirect to edited thread, I think.
Some posts are OK, some not, I counted 3 500's this AM, all with the same conditions - hang, 500, back and refresh, post is intact. Mr. Tabke is probably playing with something. :-)