Arrow disappears in YouTube Noté 4 sur 5 étoiles

I'm having the same problem as the last reviewer. I'm using the latest FlashBlock with the latest Flash beta (12), and Firefox Holly - the Nightly without Australis. It occurs on both my Win 7 64-bit machine and my Win XP machine.

I don't play computer games, so I'm not very quick on the trigger. Having said this, I can hit the arrow to start the movie during the split-second it's visible almost every time.

It'd be nice to have this fixed, though.