I hate to tell you this, but the PC laptops also become uncomfortably hot just like the Powerbook G4 series. The Pentium 4 models get really warm, and the Centrino models are not much cooler. I guess if you want to have a cool laptop we would have to go back to a lower power processor like a G3 and deal with the slowness. I do agree that the G4 powerbooks are way too warm to be used as a laptop.
Burns: The price to pay for G4 Power on your lap