I have a Razer Lachesis mouse and use Windows Vista, although I don't know if this is a Vista related problem. It has been working fine ever since I got it a few months ago. Its supposed to be a high end mouse which cost about 80 dollars. But for the past few days it just moves all on its own. I will be using it, and then it just jumps "up" on the screen. I have no idea what to do. I updated the drivers and everything. =[ I use Avast AntiVirus and Windows Defender and the computer seems clean of nasties. Any advice?