Report "Everything working fine until 9pm last night, Comcast cable modem hooked up to Airport Extreme with 2Macs, 2PC's and 2X-Box360. Everything died at same time and now unable to connect to the network(which the computers still see) or if i do connect very, very slow downloads(web pages time out). Can use cable modem to computer or cable modem to extreme to comp with direct ethernet cable ok but downloads seem slow. comcast says everything fine on their end. Apple says interference most likely as i can connect to the network only if computer is within a few feet of extreme unit. No changes in our house around time of disruption. Do have wireless phones but i shut them all down and no change. Any ideas?"