Youtube videos keep on playing even when i stop the video

[AlexRD]

This is a really annoying problem.
It nearly happens to all youtube videos i play.
The title is self explanatory, the videos keep on playing even though i stopped the video. I have tried re-installing firefox and flash, but with no good results.

Any ideas?

 

[Gornot]

Are you sure those videos run in Flash? Right click on a video and see if it displays Flash settings or HTML5 settings.

As far as my personal experience goes, whenever I install a new browser, or just clear my cache and cookies, then sign in to YouTube again, it seems to enable the HTML5 player by deafult, even though I don't opt in for the experiment. You can go to YouTube HTML5 page. and at the bottom of the page click "Join HTML5 trial" then "Leave the HTML5 trial"; that should fix some videos (with no ads) automatically playing in an HTML5 player.

As far as the Flash player goes, I'm not sure whether this is a Flash issue or something else on YouTube's part because for the last couple of days, I have a different issue where the progress bar doesn't show me how much of the video it has loaded (the gray meter that fills below the red progress indicator) though the video plays fine.