I had my first kernel panic on my iMac the other day, and I'm not sure what caused it. I had my memory stick connected to the USB port on my Keyboard, I had ejected it in the finder and everything, all was well. But when I physically removed it, my screen turned grey, and told me I needed to restart, something which freak me out a lot. After restart all was fine, and I've used my memory stick with it since, and its been fine. I was just wondering if anyone else had experienced the same thing, and if anyone discovered a cause or something? ' Thanks.