AutoCAD Civil 3D :: Slow Pointer / Mouse Lag?

On Civil3D 2007, at least on my machine, the mouse seems to move slowly when it is over the drawing space, but moves at normal speeds when over menu or toolbar items and when in other applications. It's almost as if the "resolution" of the mouse changes as soon as it is over the drawing area in Civil3D. The result is that the mouse/pointer falls behind a little bit when you move it, almost like it does when you use a remote computer over a slow network connection. This makes it difficult to have precise mouse movements.

I should also mention that I don't have this problem in any other applications, including Land Desktop 2006. Some hardware specifics: Dell, P4-HT 3.0GHz, XPpro machine, 2 gig of RAM, RADEON X600 256MB video card, single monitor, Logitech Mx500 mouse, all updates current.