This is a really frustrating issue I've been having, with my otherwise awesome Airport Extreme (g, not n) base station. I get flawless wireless, really fantastic, but about once a day, the network just seems to die. The network no longer appears on the list of wireless networks, the base station is still on (no strange things, like explosions or something), and the cable modem registers as working. Right now, I've become so fed up that I just feed directly from the cable modem to the laptop. Has anyone else experienced this problem? Is it just my base station? I feel like this has happened enough where it can't be an isolated incident. Thanks so much everyone!