I put the new unibody MacBook to the test not once, not twice, but three times. That's right. I took 3 MacBook Pro's (two 15" and one 17") to the WiFi test to see just how the stood up to three white MacBooks... My Airport is downstairs. I have had no trouble getting on line from my office upstairs- that is, until I bought a new MacBook Pro... For some reason, my MacBook Pro will not pick up a connection from my Airport. So I grabbed 2 of my customers MacBook Pro's (that's right, I fix macs for a living) and went up to my office. NONE OF THEM CAN PICK UP THE SIGNAL. Furthermore, 3 white MacBooks did. Back in the day, I found this to be the same case with the iBook G4 vs the PowerBook. Hope this information helps!