Does Flash drop frames?

At another board there has been a heated discussion as to whether or not Flash drops animation/graphic frames during streamed sound. What's your experience.

Mine is that it does. And I've found documentation at Colin Moock's site and Macromedia and others that it does, but others argue that, that is impossible since the sound file controls playback.

My understanding is that Flash will attempt to execute everything in a frame in sync with stream sync sound. If Flash cannot execute (vector graphics, as, etc) before the next frame of sound is ready to play then it will skip the current frame's contents and begin working on the next.

So I believe that it is possible that for complex vector or as, that flash may drop frames to keep in graphic in sync with sound.

This seems to be well documented at MM's site so I am suprised that people would be claiming that Flash does not drop frames.

Well Ibis over at FlashFilmmaker.com seems to differ to the point where he becomes militant. He says Colin Moock and Macromedia don't know what they are talking about.