Cursor still visible

Hi, all:

When I move the mouse from one computer to the other, in a two-computer setup, the cursor still shows in the inactive PC.  This is less noticeable when moving from left to right using a normal arrow cursor (pointing northwest), since it is almost hidden at the far right edge of the left screen.  But when moving right to left, the cursor is not hidden at all and I end up with two cursors, one in each PC...  of course one can live with this, but it would be nice if the cursor dissapeared altogether from the inactive computer.  

Has someone requested this?  Is there any setting I may be missing?

THX...