I have a very noticeable transparent glitch in the Unity Dash. It does no transparency at all and instead shows a green to red color transition with black checkered boxes. This is an entirely different visual glitch than the one that affects Intel Graphics Cards. This glitch only happens when I open the dash or the Shutdown dialogs. When the dash is not open, The unity left bar displays as it should with no glitch.

The computer that has this glitch is a 2008 Toshiba Satellite L355D-S7825 Laptop. The graphics card is a ATI Radeon X1250. This computer also has had very bad graphics performance on Unity ever since Ubuntu 11.10, showing very choppy transitions and animations. I dual boot it with Windows Vista.