I had the same thing happen to mine when I first tried hooking up mine to my PS2. I think it was doing it when I was manually assigning it IP's and whatnot. If you've done that, try having it automatically configure everything. Just for curiosity's sake, are you going to be using Xbox Live with the connection or XLink Kai? If you're using XLink, it acts as a DHCP server with the console so you shouldn't have to do anything to the Netgear card.