Not using roto bezier. I have some basic frame by frame masking that I need to do. When I click and drag a point to a new position, after I release the mouse, the point moves to a random position FAR from where I dropped it. To rub salt in the wound, I have to Undo (Ctrl+Z) 2-3 times to get it back to the original position (before I moved it). This happens randomly but very often. I've determined that It's not my (wired optical) mouse. This behavior happens with two other wireless mice as well. I am using version CS5 on a Dell Precision machine with a Quadro FX 4800 card and have been dealing with this issue for 2 years now. Any insight is appreciated! Thanks.
Ed