If you have problems with current Shockwave Flash plugin versions then check this: * see if there are updates for your graphics 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'''

Is the Shockwave Flash plugin used or the HTML5 media player? You can check via the right-click context menu of the player area what kind of media player is used. A Flash based player shows a context menu with the Flash version.