It took a long time for apple to acknowledge this issue. There was a very in detail thread on their support forum at apple.com which then apple shutdown...shame on them!
And until now, many people couldn't get satisfaction:
http://www.macbookrandomshutdown.com/
It now appears the cause of the RSS has been discovered:
http://www.powerpage.org/archives/20...l_brewing.html
It's not the intel chip but the damn CPU thermometer and heatsink (used to keep unit cool - how ironic) !!!
Now the question is whether apple will be a man and do a recall, or as they normally have done in the past, sweep under the floor. It has certainly made me put on hold decision to buy this otherwise great macbook