Hey rdhawkins,
I have it on good authority from a teacher that when the bar is closed the remote session was ending. BUT... i have just tried to recreate the problem and have not been able to do so. The bar closes but the session doesn't end.
He said it was a particular class that were doing it so we're going the let them do it again and hopefully i'll find out what they are doing to end the session.
Normally i'd shrug off the teachers comments, but the guy knows his stuff so i'll give him the benefit of the doubt and do some testing.
I'll let you know if the kids have found a clever way of ending the sessions. Could just be a network cable pulled or something running from a usb tho.
Thanks for the info.