Currently Being ModeratedOct 11, 2012 1:54 PM (in response to marcusfromhull)
Uninstall the currently installed Flash plugin then reinstall new.
Uninstall > Troubleshoot Flash Player | Mac OS
Very important to uninstall first before reinstalling.
You may need to temporarily disable anti virus software (if installed).
Reinstall here > http://get.adobe.com/flashplayer/?promoid=JZEFT
Then open System Preferences > Flash Player then select the Advanced tab.
Click: Delete All
Quit and relaunch your browser. Try a video.