Im suprised that no one actually went to canon to ask for an explanation.
The durability of the xxD shutter button seems to be less than satisfactory.
http://www.youtube.com/watch?v=CAWGScQeC5g
many people around the world are facing or have faced the death of their xxD series shutter button.
Canon SG charges $130 for the repair as they claim that the shutter button falls under the wear and tear category and is not covered under the warranty.
Yet there have been cases where if your shutter mechanism falls below the 100,000 shots "expected" for your camera, they'll replace it.
How is it possible that Canon is going to sell a camera which has a shutter mechanism working expectancy of 100,000 but pairs it up to a sub-standard shutter release button that will only work to 10,000 clicks. For every 10,000 clicks, the user has got to fork up $130.
From a user perspective, the shutter release button is the most important button to a photographer, the button that receives the most important instruction but yet Canon is sweeping this problem under the carpet.
With the recent scandal of Toyota product recalls, maybe we should call for better consumer rights and protection.