YES!!!
I've now got near flawless flash playing on linux
using Adobe's new flash 10 beta
can now play 2 youtube videos at the same time without 1 killing the other
flash no longer kills firefox if something goes wrong
and best of all, it pegs the cpu at ~30%, instead of ~70% of flash 9
still have a slight problem with some flash content not loading up first time
but a quick page refresh, and it's ok