By the sounds of it, if you shake the mouse and try to move the vertical
movement roller you get some response. Carefully take the case off the mouse
and look at the rollers. You should see a small wheel with slots in it that
spins between two small blocks. Check to see if there are any dust bunnies
in the space where the wheel resides. One of the little blocks is an
infrared receiver that detects the movement of the slotted wheel. If the
detector gets covered or dirty, then the mouse won't work properly.
As suggested in another e-mail, swap out the mouse for known good one and
view the result. If the new one works and your sure the old one is
clean.....buy a new mouse.

Arnie Robuck
[log in to unmask]
-----Original Message-----
From: Mark <[log in to unmask]>


>i'm lacking in technical jargon knowledge, so excuse the elementary
phrasing
>of this question.  i have a relatively new mouse (about 2 months old) that
>has already gotten to the point where it's having trouble moving the
>cursor.  a few people and i have already taken out the ball and dusted out
>the interior; however, it's still acting up such that i have to pick up the
>mouse two or three times just to move to certain places sometimes.  i
opened
>up the mouse again and found that the little roller that moves the cursor
up
>and down is the culprit.  it doesn't appear dirty at all.  in fact, i don't
>see any dust particles and there's no noticeable buildup.  but whenever i
>try to finger it to move the cursor, the cursor doesn't move very far for
>the first few revolutions.  the left-right roller is still fine.  does
>anyone know what could be wrong with it?  i'm thinking that either it's
>still dirty and maybe i should pull out the cotton swabs and rubbing
alcohol
>(is that adviseable?) or there's a loose connection somewhere.  any advice
>would be appreciated.  thanks.
>
>mark simmons
>