QUESTION: Is upgrading from Tiger to Leopard "Zippier" and/or is Garageband in iLife 08 "Zippier/faster/stable" I have Tiger, SR 2.4 Core 2 Duo 17" MBP w/ 4 gigs OWC RAM / 7200 RPM drive It just doesn't feel that "Zippy". Crazy, I know. Yes, i've repaired permissions, done run Ram tests, trashed the cache, turned off other languages, etc. I mostly use it for Garageband and Ableton Live. It takes long to load and DRAGS when I am playing back a track and sampling a loop in real time. What the??? Are the uprgrades worth it?