I'm having this issue with a new post. After waiting a day for a moderator to let my post through, I tried replying to a similar thread (617 instead of my 616). The same moderation message popped up, but I though it popped up because I put a new title on my reply. So, I hit that back button, deleted the title, and resent.

Sorry, moderators. I promise I searched high and low before creating a new thread.