Here’s how to fix it:
All,
This morning we updated the MAC version of the Flash Player 9 Update beta on http://labs.adobe.com/technologies/flashplayer9/ , specifically to address this issue.
Leopard users who would like to avoid this issue should update to 9.0.98.0.
Regards,
Bentley Wolfe
Senior Support Engineer, Flash/Flash Player
via the Revver Forums