I just got a 24" imac last week and have had problems with airport. When I first got it the internet was fast but the 2nd time i used it it was slow. Way slower than dialup. I thought it was my router so I bought a new netgear router.... Same thing, worked at first and then it was slow again. I tried a belkin router... same thing. I bought a apple airport extreme and got the same thing. When its working good enough to actually load a page I did a speed test online and got 330 mbps and I got 370 with my iphone. I have tried to call apple support but wait times are too long for me to sit around on the phone. Is this a big enough problem where I should just take it to an apple store and see if somethings wrong with the computer?