Become a MacRumors Supporter for $50/year with no ads, ability to filter front page stories, and private forums.
Notice...

Notice I didn't say it wasn't POSSIBLY, I said the iBook could very possibly overheat if they are run closed, because they were not designed to be run that way.

Do whatever you like, at your own risk.
 
Register on MacRumors! This sidebar will go away, and you'll see fewer ads.