it isn't installed on my iMac. I got this problem the other day when trying to use disk utility to fix an old hard drive that Lion wouldn't recognize because it was formatted under Snow Leopard. When running the check or verify permissions, all of a sudden ichat shows up on my istat menu using 200%. I don't have it installed on my computer. After restarting my computer and it going back to normal, today, a few days later I notice the same thing. Anyone experienced anything like this before?