UBB.threads PHP Forum Software Community Forums UBB.classic UBB.classic 6 Support Member signed up twice with same email address

Hi all:

I just updated to 6.5 from 6.3.1. Eveything appears fine. BUT someone registered today. For some reason they registered 8 minutes later again with a different login name BUT the same email address. I do have my controls set to NOT allow this.

Any ideas?