I'm not sure if the option to "Mark this forum as read" is for upgraded members or higher only option but it gives me the following error upon clicking it: "Authorization code mismatch. Are you accessing this function correctly? Please go back and try again."
URL where error appears: http://xerostorm.net/misc.php?action=markread&fid=5
URL where error appears: http://xerostorm.net/misc.php?action=markread&fid=5