I am using a MacBook Air 11" 2011 Model with Mac OS X Lion hooked up with a Cinema Display 27" and I am getting two different mouse tracking speeds (I am using a Apple Magic Mouse) when I move between the two screens in a two screen setup.
I have to move the mouse 20cm to move the cursor from one end of the 27" screen to the other.
However, I have to move the mouse 40cm to move the cursor from one end of the 11" screen to the other!
I can only adjust the mouse tracking speed in the system preferences, increasing it does make it faster on the 11" screen, but makes it too fast on the 27" screen...
Anyway I can fix this? This issue did not occur when I was running a MacBook Pro 13" when Snow Leopard and the same 27" screen.