Lets say that I think a system would benefit from a clean install. And let's say I have a full bootable back up on a firewire drive. So I perform the clean install then update to the latest version number and then use migration assistant to bring back all my applications and user files. My question is...does this invalidate the purpose of a clean install. Like, if I them bring all the user installed apps and home folder does that make the System just like how it was before the clean install? Or is there still a benefit to be had. I'm asking this not for my eMac which is only 6 months old but for my other eMac which is a 18 months old and started with Panther then got upgraded to Tiger while leaving all the apps and home folder untouched.