Just wondering... When I was creating a complex tune on GarageBand at one point it choked and I got a "Hard drive too slow" message. Then I got a "Switch CPU to Highest Setting in Energy Saver Preferences." I've now got my PowerBook running on "Highest" while I'm plugged in to the mains. I have actually noticed an improvement in performace right across the board, even down to smoother expose, genie effect and dock magnification, etc. (Now completely silk ). My question then: does leaving the processor speed on "Highest" do any long term damage to my computer?