I had to laugh at this story on Salon, in which the author describes the unpleasant phenomenon of feeling like your lap is going to burst into flames due to excessive heat from a Macintosh laptop computer. Althought I don't have the new fancy computer she's writing about, I would say the iBook generates plenty of heat by itself, so much so that last summer I had to invest in a Lapinator Plus. It's been $29.95 well spent. I'm just looking out for your thigh safety.