In my experience, by far the biggest factor is what surface you put directly in contact with he base of your Ti. If you recently started using your Ti on a strong insulator (on a cushion for example) of heat, then that would explain it. Ideally you want your Ti sitting on a surface that conducts heat well, or even better on one of those stands that allows air to circulate and more effectively cool it. -- On a side note, I was in the Apple store checking out the new MacBooks last week. They run just as hot as any Powerbook has. Then I was shocked to learn about one of the causes (too much thermal paste on the CPU!!). I wonder if the earlie Powerbooks have the same problem. I'm almost tempted to take my Albook apart and check the paste situation :) - T