Dave, A related possibility is that campus networking is running an intrusion detection system (IDS). We've seen one instance where this has caused problems. Regards, Steve Emmerson Ticket Details =================== Ticket ID: ORN-677013 Department: Support LDM Priority: Normal Status: Closed =================== NOTE: All email exchanges with Unidata User Support are recorded in the Unidata inquiry tracking system and then made publicly available through the web. If you do not want to have your interactions made available in this way, you must let us know in each email you send to us.