While visiting my parents I needed to get wireless internet working. After a half hour of investigation with the ISP tech support, they said, “it is your linksys router, call the manufacturer”. Well, I know my router is just fine because I used it earlier that day at my house.
So basically, what was happening is that if I hooked up the cable modem to the main PC, it worked. But if I tried to connect up the cable modem to the router, it wasn’t working because the router was not getting an IP address from the ISP.