Same here, Vista user. What is the recommended course of action? My script shield has never detected anything malicious on any of the sites I visit, and in addition I also use NoScript and Adblock to block a lot of scripts. So is it safe to continue using Firefox for now?
As I type this on firefox 17.0, I think that you may have answer to your question.
Lets not forget that you still have the network shield, web shield and up to a point some of the other shields may provide a different level of protection (it would depend what the script was attempting to do). So you should still be covered, the script shield adds that little something more. No doubt in due course it will support firefox 17.0, though there are other areas other than your browser where the script shield would be monitoring (like windows scripting host I believe).
As you say firefox with NoScript also provides protection in this area by not allowing scripts to be run by default, unless you specifically allow it for a site.