I currently have two monitors (let's call them "left" and "middle" - you'll see why in a sec), and would love three (let's call it "right"). However, I often will throw the mouse-cursor up to the top-right corner on "middle" because for a maximised window that's where the close button will be.

If I add the "right" monitor, the mouse cursor will just carry on off "middle" into "right", and aiming for the close button on "middle" will become more difficult.

I'm currently using UltraMon 3.10, but does anyone know of a way to get the mouse to stick to the corners, so that it doesn't go off into the other monitor (Synergy allows this by configuring the "gap" where the mouse is allowed to travel from monitor to monitor).