The MDD is actually designed to shut down as it approaches the overheat stage. There is a temp sense circuit that controls this. Unfortunately, it doesn't give any on screen warning, nor does it do a graceful shut down. It simply dies, as if you pulled the plug. Obviously that can create problems. As you and most of the posts here have indicated, the machine is also extremely prone to getting too hot. The engineers did a VERY poor job of managing heat generation and airflow with the MDD. Too many components, in too small of a space, with too little venting. They allowed their desire for a "coolness" factor to overtake engineering robustness and the machine obviously did not get enough testing before going into production, and the "fancy cool vents" on the bottom of the front are a joke, and only inhibit air flow instead of helping it. And this doesn't even mention the loud original Wind Tunnel P.S. The airflow, what little there is, and the geometry of the items inside the case also results in a massive...