Thank you for clarifying the "bump". I am using a laptop, so my mouse is the touch screen. The problem happens at random times. When I'm selecting something, when I'm just clicking on the page to scroll down.......... it doesn't happen w/ the actual button clicks, just when I tap the touch screen.

You know, I remember there being an automatic update of my SYNAPTICS PS/2 PORT TOUCHPAD driver, and now that you mention it possibly being a device issue, my problems did start around the same time. I've just rolled back the driver, and will let you know if that fixed the problem.
thank you so much!! (hopefully, anyway)