Hi, i know that this is even an older topic but after my mouse went crazy - double and triple clicking with ALL buttons i finally think to found a solution. The upper solution with uninstalling drivers and flashing new firmware seems to work only temporary and even in my case stopped working completely at some point.
So i started searching for other solutions and some guy suggest to spray the omron switches with WD-40. I did not have anything to lose so i try that and voila! Since that no double clicking or triple clicking on any button! I know probably this will be temporary again, also better solution is to open the switches and clean them but i think for a first try this is really easy and fast solution.
Two weeks later - double, triple clicking free