I am right clicking and dragging. I have been using it this way for years. Sometimes it will start to orbit and then stop and and open file dialog even though I am still dragging. But you are correct that its not just open, its whatever the last command I used. So if I draw a circle, then go and right click to orbit, it will sometimes go straight to drawing a circle again, sometimes it will orbit and sometimes it will orbit and then switch to drawing a circle.

>Len