I use an iBook and find the heat on the left side to be unbearable at times. I'm not sure if upgrading the HD to 80 gb had anything to do with this, if anyone can tell me it'd be great. Anyways, I decided to start this thread for all of us to post solutions to the immense heat generated by laptops. I use an iBook so I cannot even imagine how hot a PowerBook can get. As for me, I prefer to use it on a flat surface (usually coffee table) with 4 blocks on the bottom hoisting it up since I'm too cheap to go out and get an iCurve. Putting it on my lap isn't really an option since I'd like to have children one day Whats yours?