>>>http://www.theregister.co.uk/2013/01/11/foxit_pdf_plugin_vuln/
>>
>>Damn! Thanks for the heads up, though. I just started FoxIt to see what version I have and it prompted me to upgrade to version 5.4.4.1128, which the article says is affected. I really to not want to go back to Adobe Reader. I am pretty sure one of its upgrades hosed my registry so there was no sound in either of my browsers.
>
>You can still use the plugin, it's just that you should be a little careful - avoid using the plugin to open PDFs from sites you don't trust.
>
>Actually, at this moment there is a much more serious unpatched vulnerability in Java: http://mashable.com/2013/01/13/java-exploit/ . The same principle applies, disable or uninstall Java until it's fixed, or avoid untrusted sites that may use it.
>
>It's worth putting in another plug for using FireFox with the NoScript add-on. By default it blocks all "active" content such as PDFs, Java, JavaScript etc. unless you explicitly white-list (i.e. "trust") a given site. That combination offers some protection against zero-day vulnerabilities in the browser itself and any plugins that may handle "active" content.

I use NoScript.

I will probably be OK with the FoxIt virus. I am pretty careful about which links I click, even with antivirus running.