I have a G4 Digital Audio 466. A few months ago I bought a Sonnet Upgrade card and improved my speed to 1.4GH... it flew! A couple of months after that I started getting massive Kernel Panics. I removed the upgrade card and it's worked fine since. Sonnet has since sent me a new card which I would like to re-install. They suggested though that I do a complete wipe of the hard drive and start fresh. I bought a 250 GB external hard drive to back up my info and files, but what I'm wondering is whether or not the firmware upgrade I had to install before putting in the card will be effected by the clean install of the OS. Also, what's the best way to back up everything? Carbon Copy? I don't want the same problems I was having to spring up again (font problems, little crap like that...) Any advice? Sorry this is so involved.