It played CNET videos before very good in last few months. And now Firefox 17.x don't play any videos from CNET. I updated FF to 18 version and it has same problem.
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feer56 4 months ago Hello tanphat99ct,
Thank you for posting here on the Mozilla Support Forums! We appreciate you as a user of Firefox!
Please make sure your plug-ins are up to date by following the instructions below;
Please check if all your plugins are up-to-date. To do this, go to the Mozilla Plugin Check site.
Once you're there, the site will check if all your plugins have the latest versions. If you see plugins in the list that have a yellow Update button or a red Update now button, please update these immediately.
To do so, please click each red or yellow button. Then you should see a site that allows you to download the latest version. Double-click the downloaded file to start the installation and follow the steps mentioned in the installation procedure.