Hi guys, i searched for a possible solution then figured it'd be better just to post. I'm running a 17" powerbook with an MBox and a Lacie D2 extreme hdd and i'm just after any ideas to help optimise CPU power. I'm Currently not doing too bad, i can run sessions with approx 20 tracks and close to 30 plugins running simultaneously, and its only ever held off 4 or 5 times in the month or so i have been using it. I read somewhere, but i'm buggered if i can remember where is was - that there is a way of turning off shadows on OSX, which help the machine to run faster. Any suggestions at all are much appreciated! thanks for putting together such an awesome resource.