I have a wireless Logitech "laser" mouse that is pushing to the left. If I am on a screen with a left-right scroll, and scroll to the right, the screen jumps back to the left. If I do alt+tab to see my open programs, I can see the icons being highlighted one after another from right to left, right to left, never stopping, as if the mouse is being moved to the left and never stopping... but if I leave the mouse sitting, the pointer does not move to the left.
If I unplug the USB dongle, it stops.
I have tried resetting the mouse but it makes no difference.