Hi everyone. I've been going nuts with this problem for a while now but never did much about it. I'm a college student with a blackBook and am loving it. The thing is, once in a while, whenever I'm home, our WiFi network crashes for no apparent reason and can only be resuccitated with a power plug yank/reboot of the Airport Extreme base and the cable modem. Now, this never happens when I'm not home. There are two other machines on the network, a Sony VAIO laptop and a G4 PowerBook. I actually never noted the problem until after getting my MacBook either. I have the latest Airport updates, both for the base station and the laptop. The base is WPA-enabled and an Airport Express is also on the network, acting as an extender and audio hub. What typically happens is, I'll put my MacBook to sleep and then open the lid and note that it won't instantly connect to the network again. Usually, if I manually try connecting, it will generate an error (same goes for any other computer in the house). Then, the only way to access the network is to reboot the router and cable modem. Anyone have any ideas? Is this a known problem?