This only happens once in a while and not on every click. Im using an Intellipoint Optical. I tried reinstalling the software, and tried with an old Intellimouse Optical I had lying around (which I stopped using for a reason I cant remember - hopefully not the same thing haha). Also tried different USB jacks as well. Going to try with a third mouse eventually.
EDIT: Okay I guess I stopped using that old one for a reason -_- 3rd mouse doesnt do it.
EDIT: Okay I guess I stopped using that old one for a reason -_- 3rd mouse doesnt do it.