I bought my copy of Leopard today and started installing it; Did an archive/install. Everything seemed to be going ok until I got to the 'Time Remaining: Calculating' screen and after 30 minutes it gave me an 'UNKNOWN ERROR' and kicked me out. I had to reboot, so now when I try installing my HD doesn't even show up!!! Apple support forums said to wait 5 minutes and it would show up, it's been 10, I'm cranky, I want to go to sleep and I just want to see Leopard, argh! The drive shows up in Disc Utility but I can't verify or repair it. Fucking Leopard DVD wouldnt even eject when I rebooted and held down the mouse button. Never been angrier with my Apple product.