i move the mouse cursor to some random position on the desktop, lift the mouse from the desk, and click. 4/10 times the mouse cursor will move slightly, maybe 1-3 pixels. this is fucking up my work process, as my career requires precise mouse stuff, and now my boss and coworker are making fun of my palsy, which is really quite insensitive.

anybody have any idea what may be causing this?

windows 7
wmo is mouse
nvidia quadro 4000 graphics card