The only defense right now is to disable Shockwave:
- Type about:plugins, hit enter.
- Find "Shockwave for Director" (no, not Shockwave Flash)
- If you can't find it, good! Otherwise, click "Disable".
http://www.adobe.com/support/security/advisories/apsa10-04.html
In a previous post I was counting over 1 vulnerability per week:
http://secbrowsing.blogspot.com/2010/08/one-security-hole-per-week-for-obscure.html
In an even older post I tried to answer some common questions such as "What is Shockwave for Director?"
http://secbrowsing.blogspot.com/2010/05/how-to-uninstall-shockwave-and-other.html