If you have problems with current Shockwave Flash plugin versions then check this: * see if there are updates for your graphics drive drivers '''https://support.mozilla.org/kb/upgrade-graphics-drivers-use-hardware-acceleration''' * disable protected mode in the Flash plugin (Flash 11.3+ on Windows Vista and later) '''https://forums.adobe.com/message/4468493#TemporaryWorkaround''' * disable hardware acceleration in the Flash plugin '''https://forums.adobe.com/thread/891337''' See also: * '''http://kb.mozillazine.org/Flash#Troubleshooting''' ------------------- Some of your crash reports weren’t sent to the Mozilla Servers. In the address bar, type '''about:crashes'''<enter>.''' Note:''' If any reports do not have '''BP''' in front of the numbers/letters, click it and select '''Submit'''. '''The crash report is several pages of data.''' '''We need the report numbers to see the whole report.''' Using your mouse, '''mark''' the most '''resent 7 - 10''' crash reports, and '''copy''' them. Now go to the reply box below and '''paste''' them in. ;[[Image:aboutcrashesFx29|width=500]]

Note that YouTube is likely using the HTML5 media player and not the Flash player in current releases. You can check that via the right-click context menu of the player area. A Flash based player shows a Flash context menu. You can use an extension to switch between the Flash player and the HTML5 media player on the YouTube website. YouTube Flash Video Player: *https://addons.mozilla.org/firefox/addon/youtube-flash-video-player/