I have an Airport Express that I use to stream iTunes wirelessly to my stereo. I have it configured it to join a wireless network, which is my Verizon Fios wireless network from my secured Actiontec router provided from Verizon. The configuration will work for about 5 minutes then my entire network crashes and I need to power down the Actiontec router and try again. I always end with the same result. Please help if you have suggestions.