I've had an Airport Express for a few years now. I have several computers that connect to it, specifically an iMac G4, a MacBook C2D, and a Dell Inspiron (C2D) laptop. The airport is connected to a DSL PPPoE service, and the problem is that the service often cuts out; the router disconnects from the PPPoE service, and slows down often. The signal strength doesn't drop, but the internet cuts out. Apparently there's nothing wrong with the line into the house, and the modem, leaving only the airport to blame. We called the ISP, and they say that there are "known issues" with having Intel Core-based computers on the network with the PPPoE service, because they use different security or something. Personally, I think that's a load of you-know-what, but my father believes otherwise, and he's going on a witch-hunt. What should I do?