I purchased a brand new MacPro a month and a couple weeks ago and all has been a joy until a few weeks ago when out of nowhere my startup screen (dual monitor setup) would freeze/pixelate and log-in would be impossible. This problem would happen every second or third time I would start my computer and the only way any of the over-the-phone tech advisors would solve it was to reset my PRAM or boot up in safe mode. My computer has been troubleshooted multiple times via AppleCare Technical Support's Senior Engineers, it has been brought into an Apple Store for 4 days (whereby the technicians urged me to request a replacement computer because they couldn't pinpoint my problem), I have since spoken to 2 additional Senior Technical Advisers who have been absolutely no help whatsoever in solving my issue, I have had Apple's team of engineers review my Capture Log report and at their suggestion I have updated my software and STILL nothing has changed. I work from home and I rely STRONGLY on this system for my job and for my clients. Every day that goes by that I experience this kind of nonsense I am losing time, and I am tarnishing my reputation. I have saved long and hard for this system and I had repeatedly pleaded with Apple to send me a new computer with the same configurations as this so I can get on with my job. I was not asking for a refund. I was not asking for anything for free. I was simply asking for a machine that works. I am absolutely disgusted. If I wanted this level of service I would have saved myself the extra $3,000 and purchased a Dell. A few co-workers of mine had recently purchased these new Mac Pro's as well and are now starting to have the exact same problems as I am. After REPEATEDLY e-mailing, tweeting, calling, etc. Apple's technical team and executive board of consumer relations Apple FINALLY agreed to refund my computer, but would not issue a replacement and I was told, and I quote, "Apple feels as though replacing your tower will not fix your problem", but I was NOT given any of the results to the capture log or Timing Snoop tests that were done. Apple said the case was an open investigation and these results WOULD NOT be shared with me. My belief is that Apple is on the cusp of a MASSIVE PR CRISIS. These computers have innate design flaws, be it hardware or software, and Apple doesn't want bad press to get out. That is why they would not issue me a replacement, because they knew I'd have the same problems again. Apple's engineers need to do a massive overhaul and a re-design. My advice to you is to wait at least 4 to 6 months before purchasing a replacement. I certainly know I will be.