> How many pcs are plugged in ? what model switch is it ? 5 pcs only, and it is a 3com Superstack II 3300 > You didnt change anything on the switch ? eg : VLan Trunking ? Well when I got it I just plugged the all blooddy lot together and everything was working Ok.. like a hub. The only I could have changed is the location of the eth cables nothing else.. E