Flash 10.1 out, which is reportedly not affected by this vulnerability. The new version has an
unusual number of changes (PDF) for a point release, and among those are a bunch of new features that supposedly will make Flash behave as it should, and make Steve Jobs reconsider including Flash in Apple's iDevices (yeah, sure).
Meanwhile, Adobe Reader is waiting for a patch, so keep those authplay.dll renamed
EDIT: Some Flash animations (for example, the one running in the main Flash Player webpage) when right-clicked won't let the user close its corresponding tab or interact with other GUI elements afterwards. I've only encountered this bug on Opera, but it may affect other browsers as well.