Yesterday I tried putting rubber bumpers on 4 corners of my ibook. The rear end is higher so to make the ibook tilt. I was thinking the extra gap underneath can help dissipate heat. But I was wrong. Just now the cooling fan in my ibook G4 1.2GHZ 14" turned on for 16 minutes. One thing too, my battery charger/adapter is super hot. Is this normal? I remembered the last few times i use, it was just slight warm. But 2nd time today the adapter is super hot. Makes me feel smoke may come out anytime now. I am only browsing the web. All are just html content with no flash or movies.