If you follow this blog, probably you can remember my recent Apple issues.
It *seems* that after the assistance, all the problem was resolved, and probably this is true, but a new was emerged.
When my mac was “terrible hot” it shutdown unexpectly. I have this problem under MacOSX and Kubuntu, on both OS. If I try to execute any application that is ‘CPU eating’ for a lot of time I can get only a black screen in front of me .
Now I’m using MBP raised by desktop and with a USB fan