Ugh. My 2.2GHz black MacBook with Leopard is acting up. I am currently upstairs, and the router is downstairs. I get three out of four AirPort bars, but the internet is REALLY slow. On my iBook, 1.33GHz G4, it is super fast, and I get all four bars. I had read that the MacBook gets great reception, but... WTF? Any ideas, O genius MR forum community?