OK, somehow, all the permissions have gotten greatly screwed up. Registered users with >= 5 posts should be allowed to post anywhere, where all of their posts currently are forced on await for approval. I don't have time to fix this today, but I'll look into it tomorrow. If you have posted and can't find your post, just be patient, I or another admin will approve it eventually. Or after permissions have been fixed, I will auto approve all outstanding posts from registered users.