Sounds like a cookie problem but I never see a report like this (you have been banned). Ask the user to clean out theyr cookies or test another browser. I guess its a problem on the user side.

But wait for answers of the board pro's <img src="https://www.ubbcentral.com/boards/images/graemlins/smile.gif" alt="" /> maybe they have another ideas.

my board: http://www.dragonclan-forum.de
my hobby: http://www.biker-reise.de
Ich kann bei Fragen zu UBBthreads in Deutsch weiterhelfen oder es zumindest versuchen