Smada, that sounds like you're doing a hell of a lot of downloading. Slow connection, servers not found, and all the lights lit up solid. Sounds like heavy network traffic. Are you sure this isn't the case?
If you have the same issue we've been talking about, everything will work like normal until it doesn't work at all. It will look like normal (solid middle light, some blinking on the right, the odd blink on the left) but the network won't show up in your AirPort menu. You'll get the "no networks in range" greyed out thing. A reset on the base station might (but usually won't) help.
By the way, if you happen to get all 3 lights on the base station blinking together you have a dead base station.