so while my girlfriend is anxiously awaiting the arrival of her new 20" iMac, we've got a question. assuming that the machine comes with tiger preinstalled, would there be any problem with wiping the hard drive clean and installing panther from the install disks that came with my iBook G4? i've read varying opinions on these boards in the past about machine specific OS install disks. if anyone cares, the only reason we'd want to do this is so she can run ProTools on it. PT isn't releasing their tiger compatible patch until sometime in june.