No problem with some "light" app, like Word or Outlook. But when I go through pictures processing, my Pro 3 gets very hot, process is drasticly slowed down, and finally shuts down. I called Microsoft. They sent me at once a new PRO 3. And I sent it back since I had the same heat problem. Now, they are sending me a third Pro 3, which I guess will overheat. How many Pro 3 will I have to test before getting a right one ????? Technical and commercial services are very polite, but helpless so far. What is your experience ? Your advice ?