I have a dual G5 2.0Ghz 2gb RAM running Tiger. I have had the problem in the past of restarting the machine only for it to boot up and show the desktop image and the spotlight icon in the top right, but it doesn't get any further. When it happened before, I zapped PRAM and ran FSCK, with complete success. Today, while I was working, the screen went dark gray and a warning told me that I needed to restart. I hold down the power key until it shuts down, and I restart, with the same result as before: the desktop image is there and the spotlight image, but it won't go any further. I zapped PRAM and ran FSCK, but to no avail. Can anyone help?