UBB.threads PHP Forum Software Community Forums UBB.threads 7 Version 7 Support Resetting User Count {v. 7.2.2.}

Ok, so if you were to go through and delete users 3-400, then you'd run the following query:

ALTER TABLE ubbt_USERS set AUTO_INCREMENT=3

So the next user will get userid 3. As long as you delete everyone through the control panel, that will free up those user accounts.

I would recommend making a backup of your database first however