ive just been on the vbulletin forum mate (the makers of the forum software) and it seems that your problem is a bug that there currently trying to iron out
http://www.vbulletin.com/forum/showt...threadid=45509
chek the 2nd to the last post on that thread there bud
shud b sorted within the next 2 days so il upgrade the board as soon as theyve banged a new 1 out
