There appears to be several folks out here who are very talented and hopefully one of you will be able to help me with my problem. I am using the subject router in conjunction with a Linksys Cable Modem through which I receive internet access via Comcast. The router works just fine on the wireless side. However, when I plug in any one of three different PCs using any one of the ethernet ports on the router I initially have internet access, etc. but about ten seconds later I lose all connectivity on both the Wireless and hardwired ethernet ports. The Cisco Systems lighted switch on the front goes out, the power LED flashes constantly, and ocassionally all four ethernet port lights will illuminate and then go out. I have noticed that I can access the router setup via the wireless function. I can also access the setup if I plug in an ethernet cable without any other connections to the router. Anyone out there have a possible solution to my predicament? Thanks.