Well, the thing is mine works, or at least seems like it does - whenever I test the connection, though, every time I try to download the console update for Xbox Live it gives me a lovely "Update Failed" message. And since it's picking up on the wireless signals around the area it has to be functioning, so.
Also: calling the 800 number tells me that Xbox Live is experiencing issues, so that's why I think the Live network's fudging up.