Hi Ddm5,
You are welcome, thank you for your question, and I am sure hilaryp won't mind you asking this in her thread. Yes with NoScript and run inside a sandbox you are secure against recent and even against future Java script holes. As you are familiar with NoScript I would like you to add RequestPolicy add-on as that pair (NS & RP) will give you the best possible and optimal in-browser protection against these issues by also denying all third party requests to where you do not want to venture out. Always have the avast shields up (Webshield and Network Shield) and under all circumstances. If you expect a situation scan the full browser file location additionally with avast at the end of the browser-session to make absolutely sure there are no left-overs/flags,
polonus