>> You are not using full duplex on a half duplex network, are you?! >> >> Bye ... Tobias > >This is my guess as well. > >Vaclav Hanzl No, I don't think so. The Switch was set in Auto mode to detect half or full duplex and its led indicated FDX, but now I've had set it directly to full duplex mode and nothing has changed. Thanks, Salvatore