bogus mouse-pointer since (at least) 180.44
This may have been introduced in previous versions, but I stepped over some of them:
Currently I'm using 180.44 from Debian unstable with a 9600GT based board (Asus, silent version).
I use two screens on the card, but not as Xinerama or TwinView, but separate X screens.
What happens now is:
Whenever I move the pointer between the "border" of the two screens a stale "copy" of the pointer remains on the screen that I've just left, on the position where I crossed the border.
It's usually a little bit before the actual border (the faster I move, the more the distance).
The mouse pointer on the new screen (where I moved it to) works just fine.