I have a 2701HG-B 2WIRE modem/router from my DSL provider (AT&T). It has worked pretty well for over a year now.
Recently, it has started giving my wireless devices some trouble (iPhones and laptop). Almost every night sometime shortly after midnight, the WiFi becomes unavailable for connections. The SSID is still being broadcast, the signal strength is the same as it was, but my devices cannot connect to it at all - no network nor internet connection. It then resolves itself usually within the next 2 hours.
Rebooting the devices doesn't change anything, so I assume it's the router. It doesn't matter how many devices are trying to connect (1 - 3), results stay the same. Rebooting the router fixes the problem, but frankly I'm tired of doing so every night.
Is there another known solution? The router has the most recent firmware updates. The router is not very configuration-friendly. I'd be willing to experiment.
Also, I still have my original modem, and can get a new router if the diagnosis is not favorable for the 2WIRE.
EDIT: I forgot to mention, this happens to the wireless devices even while I'm using my desktop connected via ethernet. My ethernet connection is amazingly stable. So I know the router and modem are working fine, it's just the wireless that seems to have trouble. I don't use torrents, my WiFi is WPA2 secured, and I don't know of any devices turning on that would be able to interfere (I'm in a house in the city, not an apt.) For instance, my neighbor has a sodium light, but it's on the other side of her house and it has always been there, so that would't explain why I have the recent disconnects.