After two months of working correctly, I am experiencing an strange and very annoying problem. My mouse pointer is moving on its own. If I move the mouse to the left, as soon as I stop the movement, the pointer runs again to the far right. This makes the mouse totally unusable.
The mouse device is an optical USB mouse.
It is not a problem with the mouse itself. I have tried with another mouse, same problem. (both mice are OK, I have tried both mice on my laptop, both worked perfectly)
Have tried different surfaces, too. Same problem.
System is Windows XP Pro SP3. Computer is a desktop PC two months old.
I suspected it could be a problem with the mouse driver. But both mice are from different brand, so I suppose they use different drivers.
Related Question: Why is my mouse pointer twitching?
Solution:
What surface are they on? Cheap optical mice can really be thrown off on some surfaces.