I have Leopard installed on my SR MBP and have run into some problems. The Keyboard. The built in keyboard will at times cease to work randomly. It won't respond, no lights, nothing, even during startup. Shortly after the track pad will follow suit. It seems like there may be a bug in the driver. This problem is only solved by resetting the PRAM (which means you have to have an external keyboard) or the keyboard will come back to life randomly after tapping keys repeatedly. I was completely locked out of my computer because bluetooth would not initialize at the login screen. I tried for about 30 mins to get my bluetooth keyboard to finally be recognized during setup so I could reset the PRAM.