Hi Mark, i have a similar problem with windows 98 SE,and i copy the aplication to the local drive and that fixed the problem, i have a red Novell 5.0.
I know that the solution is not that but maybe can help you.
I really want to know what is it because i have the same problem when the users open more that one aplication if the aplication is on the network, if i copy the .exe to the local drive doesn't happend.
sorry about my english..