According to Canon Professional Services I took over 343,849 photos on the 1dm3 camera i sent in 2010. That was the second time I had it replaced, i never got a number from them the first time but i am sure it was up there.
My buddy has never had his 50D in for repair and i'd wager he has somewhere around 500,000, why do i think that? Because before we even started our own sports photog company he was using it to shoot sports for other companies and since then only my 1dm3 has been in 2x, last time in 2010.
His 50D was made in the heavens i think! lol