Dual monitor vs mouse pointer

Hi,I've just set a second monitor, smallest than the main one: everything seems to be working fine, except if I uncheck in FSX General settings "pause on task switch":mouse operations work normally for a variable amount of time (while FSX is flying), allowing to drag the pointer back and forth from main to second monitor; then the pointer - only the graphical appearance! - won't come out of the second monitor, although dragging the mouse over the main desktop reveals that it's working, yet it has become invisible...to tell in a better english: i see the pointer stuck in the second monitor, yet the mouse is invisible and working on the main one (at last I have to restart the system ... no options came in mind to me)anyone having experienced anything like that?thanks