Mouse click sensitivity

In both the final version of V8, and now with the Connect Edition, I've experienced a tendency for my mouse to be hypersensitive to clicking.  In other words, it seems to double click, especially when I use the middle button to snap to an end point, or if I'm simply drawing a continuous line without using snaps.  I often have to draw a fence around an irregular shaped object, and after using the middle button to snap on an endpoint, the mouse will almost instantaneously place another fence corner as I'm moving to the next point.  I have to hit undo, then go on.  Perhaps just as frustrating, is the fact that it doesn't do it every time.  I may do several points without issue, then all of a sudden I can't do two in a row without undoing the extra points, then it settles down and lets me do several more without issue.  I've changed the mouse I use, and it happens on both my work and home computer.  I also use Autocad, and don't experience any "double click" issues with it.  I know there's a setting for how long I have to hold the right button before a drop down menu appears, but is there a setting for the left and middle button sensitivities?