My netgear card goes into half duplex when I mess with my cat 5 cables. I have a Netgear FS108 switch and when I unplug and replug a cable I can expect my firewall machine (eth1 = netgear 310 card) to cut us off from the internet. I have to restart networking. Herb -- Herb Rubin Pathfinders Software herbr@pfinders.com www.pfinders.com phone: 415 292-4935 fax: 415 292-4913