Wirelessly posted (Mozilla/5.0 (iPhone; U; CPU like Mac OS X; en) AppleWebKit/420.1 (KHTML, like Gecko) Version/3.0 Mobile/3B48b Safari/419.3) I have a mb, c2d, leopard 10.5.1. I had ff3, safari, mail and iTunes running. iTunes was d/l a lot of stuff and then the system froze. nothing would respond. did a hard reboot and then the system wouldn't boot. after a long while, I got the folder with ? in it. I put in my leopard disk but it wouldn't boot off of that either until the 4th or 5th attempt. I tried to run disk utility but the hdd doesn't show. what happened and what can I do?