Version 3.6.0, this is happening to members of every group but Administrators, and I've checked *everyone's* permissions. i've reset them to the defaults, even, and still no luck. The changing the "Moderate Posts" option in the Forum Management area didnt work.. It was already set correctly. Stil, I'm having to validate user's posts.
Okay, do you have any Access Masks set? And in the User Group Permissions what setting do you have for Follow Forum Moderation Rules?