All right, the old wood gives in Ati opensource, so proprietary for this card anymore - they are in opensource. But hardware acceleration of flash in them, so only the percent - and the percent of such permission does not take out, flash is inadequate a lot of resources for video requires. Want to download better than this from him. Nvidia need fresh and there like with some color glitches (definitely was not aware of, cured if - because right now I have CPU enough for it and I haven't experimented)
If the system pulls to play in a normal player in full screen mode, you can try to use something like https://addons.mozilla.org/ru/firefox/addon/video-without-flash/ or https://addons.mozilla.org/ru/firefox/addon/vlcwatcha/ In General, digging into the side of the playing file in a browser, to transfer to a normal player
Compiz work? Glxgears are saying?