said by unclemic:
I have 7 wifi devices connected to my gateway. After several hours the router will disconnect 3 devices and I cannot reconnect them unless I reset the wifi router. System is Arris model TG752 gateway. Just activated on 8/9/12. Comcast has replaced the gateway once and i still have the same problem.
Try increasing the DHCP lease time in your router. Try changing the broadcast channel. Update the network drivers on your device to the latest available. Update the firmware to the latest version available on the manufacturer's site. If you plan to buy a new one check the modem and router is compatible with Comcast. Comcast will not activate a modem unless it was purchased at a Comcast authorized reseller.