I have one workstation on a ten workstation network(windows 2000 and windows 2000 Advanced Server) that keeps losing network conection. He can be on the network for about a hour or two then gets knocked off. I unistalled the drivers and reinstalled them and the same results. He will be able to log back on but then gets kncked off again. I checked all tcp/ip settings and all is good. I then purchased a new NIC and same results. The cable is new and never gave us a problem before. This problem is a new one just started to happen three weeks ago. I ran Anti Virus and spy ware programs and came up clean. Any suggestions?