My new 2010 iMac has been crashing lately for no reason. At first is would just freeze up silently and i would have to shut it down manually. Now when it crashes it speakers go nuts with a very loud sound that sound like "death". I did put 4 gigs of new ram from cruscal in over a month ago (close to when these imacs came out). All Apple Hardware checks find nothing wrong. It happens randomly and wont happen for days then will come back. I have checked logs and could find nothing, is there a specific play in the logs i should look at? maybe even link it to you folks?