Hello, I had my Macbook CoreDuo 2Ghz 2GB RAM serviced about 6 months ago (for the cracked palmrest problem) at my local Apple store. Anyway after I got it back from the store, the first thing I did straight away was to upgrade from Tiger to Leopard (clean install). However since then I've noticed that it does run a lot hotter than it used to. In addition, general graphics performance seemed a bit sluggish by comparison - in particular youtube if there are lots of other safari or firefox windows open, and google earth is a flicker fest now that sends the fans going full blast. I'm about to start a digital media college course that will really put the macbook through its paces and I want performance to be as good as it can without putting needless wear on the fans. My question is, do you think its possibly due to the repair work I had done? Or is it more likely to be a result of Leopard being a bit bloated in comparison to Tiger? Any help you could give would be much appreciated!