During one of the phpbb3 updates one of the modifications that I use to automatically move users to different groups was deleted. Since all the forums were set up relying on these higher privilege groups, users that were added in that 'missing mod period' were having all their posts go through moderation, and not appearing immediately.
I have reinserted the mod, and hopefully it should allow posts to appear if you have passed the first 5 post moderation requirement.
If you have more than 5 posts, and your posts are not appearing immediately, email deadline@tm9-801.com.
The number of posts you have made is listed under Total posts: in your User Control Panel.
Nothing nefarious was being done to any user... if any post was not approved, they were notified as to why. And I don't edit user posts. I may delete it, but will always post why.