My sister needed to get a new laptop for school so I met her at a Mac shop as I explained benefits of the macbook for her. She loves ilife and al ot of other features and went with it. Works great for her with one exception for some reason Aim disconnects pretty often for her. Is there some network setting in macs or something I may not be aware of that would be causing this? Connected through wireless network and works fine on all my other pcs and her internet connect itself is strong and good some reason aim disconnects a lot though.