Hi Jim and other listfriends, thank you for your comment about cleaning the mouse, but ..... when I am "off" ...real "off", then my arms weighs a ton and the mouse two !! It must not hit a little dust or I have already problems. A trackball helps but is useless when you are "on", because it doesn;t work (for me) as good as a mouse. If you give me your address I send you my q-tips and my little bottle of alcohol:) Warm greetings to you all:) Kees