Hello, When I try to install leopard on my 8 core Pro, it restarts fine, and then goes to a grey screen. No logo, no error. There's just a grey screen. I am trying to install it on the drive in bay 3. My disc config is below. BAY 1: Snow Leopard, Primary OSX disc. BAY 2: Microsoft Windows XP via boot camp BAY 3: ..... I have tried using the "C" boot, setting the DVD to be my primary startup disc, and using "Option" when booting. When holding Option on boot and selecting the Leopard install DVD, the computer freezes and I have to force shut down. Otherwise, it goes to the grey screen. PS: The DVD is a full retail copy, not a grey disc from a specific system.