This is an email I wrote to Tim Cook today: Dear Mr. Cook: I would like to voice my frustration with AppleCare. I purchased an early 2011 Macbook Pro. When I connect my Macbook Pro to my 24 inch Apple Cinema Display, the display momentarily goes black every so often. The "black screen" happens at random. I have been struggling with this issue ever since I purchased the Macbook Pro. I have contacted AppleCare numerous times. At first, it seemed that the AppleCare people...