I have noticed some Issues with animations in natty (Unity).
- Minimizing a maximized window (such as firefox or chrome) you will see some visual artifacts near the top left. This only happens with the "zoom" animation.
- Fade animations can be glitchy. For example if you click an indicator menu,and then click it again to make it go away there is a noticeable white flicker on the fade out animation.
I have observed these exact same issues on both intel and amd cards (both fglrx and oss drivers) These kinds of things show a lack of polish. I know this is probably just nitpicking, but look at Aero or Aqua, you never see unpolished visual glitches like this. It just shows a lack of polish IMO. Also there doesn't even seem to be a close animation which is inconsistent.