I use utorrent, after the client spends some time downloading whatever, and I'm working in the same time with safari and other web activities. the internet service goes off. it doesn't disconnect from the wireless network though. it just as if there's now internet service. first time happened I thought the problem is from the wireless device or something, because after using network assistance and restarting the device the problem is gone. but now it happened again with the same circumstances. now the problem is mac ? is it utorrent ? should I use another client ?