I bought an early MBP and I want to upgrade to Leopard when I comes out. What's the smart way to do that? I keep regular backups (SuperDuper and an external HD) so that's good start I know. I want to do a clean install too. Being new to Macs I got a little carried away and installed a lot of junk software. My system isn't particularly unstable, but I'd still like to start fresh. So when I wipe the hard drive and start with a fresh install, is it safe to use the Migration Assistant I've heard about, or will it copy over my old programs and crusty config files and all that too. Or am I better off manually, tediously, copying over files from my home directory by hand. That would generally be okay assuming I can drag-and-drop my Aperture and iPhoto libraries. What about iCal and Address Book databases, and how about Mail settings. Those are the slightly tricky things that worry me. What can I do to ensure a smooth transition?