Flash 9 is beta, so some issues are expected. Can you provide some links to specific files you are having problem with?
"Really, I'm not out to destroy Microsoft. That will just be a completely unintentional side effect." - Linus Torvalds
"When I do this, some people think that it's because I want my ego to be fed, right? Of course, I'm not asking you to call it "Stallmanix"!" - Richard Stallman