I have not posted as I really don't know what to say and with Matty jumping in first...
Anyway I have done some poking around and there is nothing at our end that indicates there is anything I can do to solve the problem, I have a hunch the issue is VB and cookie related but I can’t confirm that for now. I have spent a few hours this afternoon on the Vbulletin site looking for answers or even clues to what I can change to help. Unfortunately it has so far turned up a blank and changing things just to try could lead to more issues
I will continue to look though and in the mean time I can only apologise and ask you to stick with us.
Cheers
Steve