Bob,
Thanks for the reply. They have a WinFrame Max (I think that's it) running which uses NT 4. Based on the other replies, we are going to try a test on it next week. The hope is that it's a problem with 3.51 vs 4.0 server. Fortunately, it's out of my hands for now!
PS, thanks for sending Dale my way.
Oct 31 = Dec 25