OK, it did it once last night and I didn't think anything of it, but it's been doing it a lot today. Here's the problem... My PB will make a clicking sound as if the HD was searching for something, nothing happens when it's making the sound and it does it for at least 20 seconds at a time. I can't do anything except move the mouse around. When it's done making the sound I'm then able to do whatever I was doing. Anyone have any ideas?