I bought a MBP 17" and an Airport Extreme Base Station to go with it a few months ago, and I've been having an intermittent problem with dropped connections. Symptoms are as follows: Sitting there doing whatever (it really doesn't matter whether there's a lot of network activity or none at all), when the airport connection drops out. The network usually disappears temporarily from the menu, and I can sometimes see other networks in the area, sometimes not. If I toggle Airport off and back on with the menu, it immediately kicks back in and works fine. Prior to 10.4.8 the meter in the menu would show full bars, but the connection would be dead. As of the most recent updates, the bars now go to zero accurately reflecting what's happening. This is very intermittent--sometimes it'll happen every five minutes, other times I can go over a day without a dropout. I had initially thought it might be something specific to the MBP, but I'm on a trip now and the wireless is absolutely rock-solid in hotels, etc. So now I'm left thinking it's either a flakey base station, some weird interaction between MBP and the ABS, or some external source of interference. It definitely isn't signal strength--I'm only about 20 feet from the base station, and always have full bars. There's nothing between me and the base station but a couple of thin interior walls (no microwaves or such), and turing on Interference Robsutness has no effect. The network is WPA2 Personal, but the security type doesn't seem to matter. My G5 tower hardwired to the base station never has any problems at all--chugs right along through these flake-outs. Anybody seen something similar to this? Maybe have a suggestion as to how to narrow it down at least, so I know whether to go for a warranty replacement? Certainly if I figure out anything I'll post here so it might be helpful to others.