Comment 2 for bug 172247

sorry, I couldn't find a bug that was the same, so I logged a new one... I've noticed since that very occasionally (maybe once in 15 loads) it will not update the fullscreen correctly, the background (black bars) above and below the video will be whatever was below when maximizing, so will look incorrect, however when the display is corrupted thusly, the flickering does not occur...

anyway, it's probably an issue with compiz or emerald since it doesn't occur when you have desktop-effects turned off.