I have a wireless network attached to Time Warner Cable via an Airport Extreme (5th Generation) and a Motorola Surfboard 6141 Cable Modem. Everything worked perfectly up until about two months ago. Since then, I have spent hours troubleshooting a very strange and very intermittent problem. The symptoms is I simply cannot connect to the internet at certain times. It might be unavailable for a few seconds, a few minutes or several minutes. If I do nothing, it comes back on its own. The modem stays connected to the Time Warner's network. The Airport Extreme stays connected to the modem. The Wifi network stays up. None of the lights on the devices shows any connection problems. The only indication of the problem is loss of ability to connect to the internet and the internet light on the Airport Utility (not the Airport Extreme itself) goes amber. Apple has replaced the Airport Extreme (twice). Time Warner has sent people to the house. All the signals are perfect. There is no pattern to the problem. The problem occurs on every device (iPad, iPhones, Apple TV and all computers) whether it's attached via ethernet or wirelessly (it's not wireless interference). Has anyone experienced anything like this and did you find a solution? I've escalated to a senior advisor with Apple and a senior advisor with Time Warner. I've tried every possible configuration setting with the Airport Extreme. I've reset the modem to factory defaults (twice). It seemed to help, but then the problem came back.