Hey all, I'll be getting OSX Lion for my late 2009 iMac when it's released. But I can't really be bothered to do a complete fresh install, as it doesn't seem to have lost any speed. (Thanks OnyX). So I was wondering if theres an option to just upgrade the os without loosing everything or needing to restore everything from my backup? I'm pretty sure I've done it on my G4 but that was a while ago, going from Panther to Tiger. Thanks in advance!