I was wondering about that as well. I couldn’t believe that Apple would release a product that produced that kind of heat—especially without testing it under all kinds of load.
Just happened to skim this month’s issue of Laptop magazine at a newstand. They also have a small article, nowhere near as detailed, about the heat issue in laptops. In addition, their article also stated that such sustained heat in the lap area of a male could be a factor in male sterility.