My Macbook Pro won't hold a wireless signal. I don't have another wireless signal to test, but have tested other devises which connect fine. '07 model MBP core duo running OS4.11 + original Airport (hey it still works). The MBP will only stay connected now if my base station within 10' or so. It might connect 30' away, but looses the signal after loading a few pages online. It seems like its getting worse -- maybe not, but seems like it is. I can connect just find with my other MBP, iPod (streaming audio across the house, etc) and PS3. Suggestions?