My mouse is optical but not wireless. A spinner is when I'm moving (or standing still) and for some unknown reason the next thing I know is I'm looking up at the sky and I'm spinning wildly, it locks up for approximately a second while spinning, then I'm looking straight up. It doesn't happen often, usually about twice during a session, but it's highly annoying and leads to being an easy target when in a firefight. It tends to happen more often in buildings such as the church or the apartments in Avalanche, in the tank house in Donner, but will occur in open ground as well. If it's simply an aspect of having an optical mouse and it's some sort of reset I can live with it, I'd just like to know.