ok the last couple of days my mouse has been drifting across the screen of its own accord, i've tried reinstalling the drivers, useing different USB ports, i even tried my old mouse but even that does it. Its been working just fine up till now and i havent changed anything, they even do it when i turn em upside down
mice in question = logitech MX518 and microsoft comfort optical mouse 3000
OS = Win7
makes doing anything that involves the mouse rudy hard!!