Mouse Automatically Double Clicks

I've used AVG Free 8.0, Spybot - Search and Destroy, Windows Defender, firewall on, all my anti-virus stuff updated, so I don't know what's wrong. I've physically checked my mouse, cleaned it etc., didn't find anything wrong. I also played with mouse settings, and did the little test thing to open and close the folder, and it still double clicked. I also play Call of Duty 4, and my weapon will like 'jam' up. I have found some suspicious things, like some 'Virtumonde' and 'DoubleClick' thing on my virus scans, and the DoubleClick one says it is like some tracking cookie. (No matter how many times I delete it, it comes back.) I can't tell you how annoying it is when I have a window behind a window and it exits them both out because my mouse suddenly double clicks. I also know I am not PHYSICALLY double clicking it instead of clicking it once.