Nothing earth-shattering here, but thought it worth reporting that my business partner's 2010 6-core, purchased last August, just suffered a complete power supply failure. The supply was quickly replaced by our local Apple service center and the MP back up and running. Symptom was pretty basic: Pushing the power button on the front of the machine did nothing but produce a faint click inside the machine. Did all the obvious stuff like checking the power cord, etc. AppleCare rep on the phone walked us through all the other tests before concluding that servicing was the only option. Never had a power supply failure before on dozens of Macs owned by our company since 1996. Wondering how common it might be, especially in recent generations of Mac Pros? Yes, we got AppleCare for our new machines!