It seems about every other update to the Flash video player plug-in yields a blank, green screen and an audio only experience.
I enjoyed the first edition of the D800 vs Canon 5DMkIII video from the Calgary, linked earlier from another site. Now, comes part II, and I get the green screen.
Frustrating. FWIW, I run Win 7 Pro, 64 bit, with 8 Gigs of RAM, with an Intel MB an I7 processor. Pretty vanilla, pretty powerful, and fairly up to date.