no, there is no random shutdown, apple just "fix" it for me, and they changed the top case too. right now, my problem is, after around 8 hour shutdown status, i need to press poweron button around 3 times for machine to start. Once started, i can turn it off and then turn it on with no problem. would this be because o cold weather or what? I bought the MB in Dallas, im not in Philadelphia for a conference, but if cold weather is to blame, apple's quality is really low then.