It appears to only happen with Chrome and only in youtube. Full screen is only 1/4 of the screen in the upper left corner of the screen. It had happen before, I went to plugins and disabled the latest version of flash player. Three days ago I uninstalled and re-installed Chrome, the full screen issue is back, the flash player is 11.9.900.117. There's two of them, same number, one with periods and one with commas. I disabled the one with commas but the problem is still there.
Does anybody know anything?