If Flash videos actually crash your entire computer, rather than causing [[The Adobe Flash plugin has crashed]] notice, try this: Turn off hardware acceleration in your Flash Player display settings (Right-click on any Flash video, click "Settings", select the Display tab and uncheck “Enable hardware acceleration". <img src="http://support.mozilla.com/img/wiki_up/fpSettings1.PNG"> Ref: http://kb.mozillazine.org/Flash#Performance_or_display_issues_with_certain_Flash_videos If you still have problems with Flash, try the troubleshooting suggestions here: [[Managing the Flash plugin]]