I'd like to add my G4MDD to the list of those using Logic Pro and finding the system freeze or crash, in my case especially when sitting idle for 10-15 minutes it will freeze, requiring reboot. Since these are Apple's hardware and software, I'd hope there would be some acknowledgement/enlightenment about this from Apple. And I don't have $4K to go to G5 and Logic 7. Could a solution be as simple as keeping the hard drives from going to sleep? G4MDD, 1.2Gx2, Logic 6.4.1, 2GRam