Had a little tinker with Flash 10 this morning, to see if it could speed up a particularly heavy duty 2D game I converted a while back.

The details and game are linked below, but basically the upshot is that my simply setting the "wmode=gpu" tag you should get a huge speed improvement - if you're blitting bitmaps or plotting pixels at least. This version would probably just make 10fps under Flash 9 - it's hitting 50 or so now.

Take a look - I was pleasantly surprised.

http://markripley.com/?p=10