I've recently purchased autocad light 2013 and I'm unable to draw anything in minute detail - curser/drawing tool becomes very "sticky" as opposed to fluid. This has never been an issue with any of the previous versions I've used. Is there a setting somewhere or may this be a computer performance issue?
Turn off anything dynamic, Windws Aero "feature" and adjust hardware acceleration.
Those are just some of the steps you need to take to dumb down so that AutoCAD can understand and not have a cow.