After loading Service Pack 2 (XPSP2) the mouse cursor will at random start to scroll off the screen when there is no mouse activity. This has appeared to occur on multiple systems with different hardware (both mouse and computer). It seems to occur most often with an optical mouse, though my sample size is not large enough to pinpoint specific hardware interactions. (We actually assumed that a mouse that was working was no longer working and switched the hardware only to have the problem re-occur!). Has anyone found a solution to this issue other than uninstalling SP2?