I'm wondering the same thing. I put in a very different version (orders of magnitude more efficient) of the message-posting routine, but in watching the trace log go by, I'm seeing problems with some posts of yours. You keep trying to post a reply to #msg-12507474 but it's simply not "taking".
Yet you're able to post here...
Edit: I got an error message on that post attempt, so I've reverted back to the old routine. Will tackle this again tomorrow.