Firefox flash8 bug?

Hi there, i do not know if this post is in the right place but , i try anyway.

I have a problem, When i make 100% sites in flash, and i have to put the flash wmode to transparent, in IE it works ok, but in Firefox it slows the animation and the site stays very unstable.

I found that if i take off the wmode transparent in flash the website runs perfect, but i cannot do that because the transparency is very important for my site design.

Some people says it is a bug of firefox, and if it is, i ask if there a way to go around this issue.

All help is appreciated…

Thanks in advanced…

Márcio Henrique - Portugal