i just bought a logitech LX7 wireless optical mouse and while using autocad when u press the middle mouse button it wont pan. I have the middle button set to "autoscroll" and the mbuttonpan set to 1. Ive tried setting the middle button to "none" and also to "universalscroll" as well as switch the mbuttonpan to 0 but nothing seems to change it. Its stuck on just moving left to right and up and down, not panning. Does anyone know how i can get it to pan??