Hi, the plugin checker site now has a large notification: '''All versions of Adobe’s Flash Player plugin are currently vulnerable.''' A "Learn more" link leads to this page: https://support.mozilla.org/kb/set-adobe-flash-click-play-firefox So even though there is an update button, in this case, there is no update available so please ignore the button for now. ---- If you are not accustomed to using the "Ask to Activate" feature for a plugin, here's what to expect: When you visit a site that wants to use the Flash, you should see a notification icon in the address bar and one of the following: a link in a black rectangle in the page or an infobar sliding down between the toolbar area and the page. If you see a good reason to use Flash, and the site looks trustworthy, you can go ahead and click the Lego-like icon in the address bar to allow Flash. But the page might be using Flash only for tracking or playing a video ad. If you don't see an immediate need for Flash, feel free to ignore the notification, it will just sit there in case you want it later.