A friend of mine was having the infamous overheating and whining/hissing sound issues with his MacBook Pro and decided to call apple. He told me that the tech support representive he spoke with on the phone said that the MBP (or any Apple notebook I'm assuming) isn't supposed to be used on a lap and hence them referring to them as notebooks rather than laptops. Is this true? Are they really not supposed to be used on your lap? Should they be usable on someone's lap? Is this common knowledge about Apple notebooks or is this guy full of it? I have no idea. He also mentioned something about airflow and how the notebooks were run cooler on flat surfaces. I believe that to be true as my Powerbook seems to run cooler when placed on a flat surface but what are the reasons for it? Is it because a pair of legs in pants act as an insulator for the heat and thus preventing it from escaping? Are there any other reasons? Also, apologies if I posted this in the wrong forum.