UBB.threads PHP Forum Software Community Forums UBB.classic UBB.classic 6 Support Deleted members "stuck" in registration queue.

To rule out any odd behavior have you logged out of your site and if needed "manually" deleted your local cookie for the site?

Then log back in and verify the same issue exists.

I'm not sure if your version has a clear cache button in the Control Panel or not. If not then you might have to get support from one of the more experienced guys here and do some manual repairs.