i just got a new 17'' yesterday and while i know that it's sometimes hit or miss with certain models i can't believe how many of them are unreliable. Not even sure if it's of a hardware reason or leopard (i'm on 10.5.5) The airport/ wi-fi connection always drops to 3 bars but then i can't connect to the net at all and the connection seems frozen. I need to restart the airport connection for it to work again. So annoying. What's going on? Any idea?