I took my Macbook Pro to the Apple Store in Green Hills (Nashville). They tell me it doesn’t appear to be a hardware issue as they hard drive they had did show up on my Macbook Pro’s desktop after about 5 minutes. They recommended I do an archive and install of the OS. I’m concerned about losing my preferences, key codes (for Lightwave, in particular) as I’m in the middle of three projects. I was told if I checked, “Preserve Users And Network Settings” prior to my archive and installing of Leopard I would be fine. I’ll let you know what happens.