what kind of connection is it getting? Go to advance , then wireless and it will show you your connection. It might not be your wireless. Does it ever lag out and go into trouble shooting? Heck my last problem on mine was the modem was fucked up. replaced that and it works fine. Sometimes it doesn't load up on X-box live and I just disconnect the modem, router and let it reset.
"Less talkie talkie more ping pong"