FYI in case anyone else thought this was a vBulletin bug

Database relations: deleting accounts can cause relations within the database to be broken; explaining it further would require extensive knowledge of vBulletin's underpinnings.

Reply just in from vBulletin support, and are those folks getting fast on the answers

Honestly I have no idea what he means by that. I've deleted accounts before and have never had a problem. Nor have I heard of any problems like this in the almost two years I've been providing support.

Some one was asking my advice as to whether or not this was a possible bug in vBulletin before purchasing. Thank fully l can say it isn't and just posting it in case other's have read the message on the net and were wondering.

HTH.