I register here because I think that I found solution for this problem (or just reduce problems at minimum) My configuration: HD6870, Windows 8 PRO, latest beta drivers, Firefox 22, Thunderbird 17.X Problems: black squares, driver crashing using Mozilla software, windows menu decoloration Solution: A) FIREFOX 1. disable hardware acceleration 2. disable hardware acceleration in Adobe flash option menu 3. go options, go advanced, go general and uncheck smooth scrolling. 4. about config: type: "webgl.disabled" and set to true 5. about config: type: "gfx.content.azure.enabled" and set to false 6. close firefox, restart computer If you experience problem again, it is because you maybe use Thunderbird which have same problems which make mess again. B) THUNDERBIRD 1. go options, go advanced, go general and uncheck smooth scrolling 2. Go to options - advanced - general - config editor 3. type: "webgl.disabled" and set to true 4. type: "gfx.content.azure.enabled" and set to false 5. close Thunderbird, restart computer C) AMD DRIVER 1. Go to Catalyst control center 2. Choose gaming and 3 application settings 3. See anti-aliasing mode and choose override app settings 4. A-A samples choose what you want I hope that helped.