Hi, have you checked that the rollers inside the mouse are clean? I think I did show you at one time. Take out the ball, then use a nail file or similar to clean the built-up gunge on the rollers. Get them clean and your mouse will be a groovy mover again.
Thank you. I will go and try out an optical mouse. I have three and I think they are all blind, as they move slowly feels as if they are draging their feet, and one seems to go side ways in stead of up or down. Maybe it's its me.