Hi everyone, In 20 years as a mac user, I've never seen anything like this. Beginning a week ago, after I upgraded from 10.8 to 10.8.2, my retina 15" MBP from July has been taken over completely by continuous cpu overloads (with fans blarring) caused by a kernal task that takes from 600 to 650% of my CPU's activity. The seizure can last anywhere from two minutes to 10 (after which I give up and restart). Often on restart, it immediately resumes. When a siezure occurs,...