YouTube videos will play for about 45 seconds then the screen turns green and no audio. I have checked and unchecked the “enable accelerated hardware” box as suggested in many forums to no avail.
OSX 10.6.8. it does it in Safari as well as Firefox.
Thank You for your responses to the green screen video issue! Updating Flash Player (http://get.adobe.com/flashplayer) seems to have fixed it.
install all the latest Software Updates
make sure you are using the latest version of Flashplayer.
make sure you are using the latest version of Firefox
if the issue still persists, again, right-click the video and uncheck hardware acceleration within the Flashplayer settings
try thils HTML5
Reset Firefox – easily fix most problems
Disable Hardware Acceleration