I wanted to wait for a decent bit of time to let the MBP owners out there really get a long term perspective on the following question: I was wondering how the temperature on the MBP measured against the PowerBook G4? I have the 1.25 GHz model. My PowerBook is often very hot and very uncomfortable to pick up and carry for more than 20 seconds when it has been on for a while. Obviously people who have owned both machines would be the most helpful in answering this question. I am likely going to make the upgrade to the MBP when the updates come out around summer. Thanks for taking the time to help.