In Pictures: 10 things to know about Firefox 17

A brief look at what’s new in Mozilla’s latest browser.

Click-to-play plugin blocker

This security feature added to Firefox 17 presents a more friendly way to deal with outdated plugins. Now whenever you install a new version of the browser and it recognizes a plugin (like Adobe Reader, Flash or Silverlight) as old -- and therefore a possible security risk -- it will automatically block the plugin in question from running on a page. Click on the blocked plugin’s image to allow it to run still.

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