I've gotten this message a once in the first week i had my c2d macbook pro, and now 3 months later it's happened 2 days in a row(twice). "you need to restart your computer hold down the power button for several secondsor press the restart button." the screen gets darker, its like the message is coming down, and it is gray. It is also displayed in french, german, japanese, and chinese. has anyone experienced this problem, and what could it be? I've repaired permissions, so that won't fix it.