Again, I'm sure this has been discussed, but all the iphone topics have made it hard for me to find a thread . . . So, I know lots of people have been having the problem that I have -- wifi on my Macbook periodically goes out. And periodically means every few minutes or seconds. Web pages lag in loading up or I have to wait minutes to regain service. Files stall while downloading. It's driving me absolutely crazy. I have a 3-month old blackbook that came with 10.4.1 installed. I have updated with the recent firmware and the problem persists. It took me a long time to determine that it was not my airport express wireless field or my comcast cable modem service, but my damn computer, which I love in every other way. There's a long topic on the Apple forums about this, but I was wondering whether the hardcore apple obsessives over here might have some insight into the problems and perhaps can shed some light on a solution. Again, my apologies if this has been discussed ad nauseum.