Path: utzoo!utgpu!news-server.csri.toronto.edu!rpi!dali.cs.montana.edu!uakari.primate.wisc.edu!zaphod.mps.ohio-state.edu!casbah.acns.nwu.edu!ftpbox!mothost!motcid!derosa
From: derosa@motcid.UUCP (John DeRosa)
Newsgroups: comp.sys.mac.system
Subject: Re: The Saga of the Jerky Mouse
Message-ID: <6644@crystal.UUCP>
Date: 20 Jun 91 16:12:28 GMT
References: <1991Jun17.192542.15211@zip.eecs.umich.edu>
Reply-To: motcid!derosa@uunet.uu.net
Organization: Motorola Inc., Cellular Infrastructure Div., Arlington Heights, IL
Lines: 29

warack@eecs.umich.edu (Christopher Warack) writes:

>Several people have posted about problems with their cursor jerking around
>on the screen as they moved their mouse smoothly along a line either on
>a pad or not.  .

There are two sources to this problem that I have encountered.

1) Light weight balls - There are heavy balls and light balls.  The
light balls weight as much as a ping pong ball and are just not heavy
enough to prevent skidding on the pad.  A heavy ball is the weight
of a golf ball (or more).  The difference is VERY noticeable. 

Light balls can be helped with a good cleaning and a rough
cloth mouse pad for a while but eventually you need to get 
a heavy ball.  This is not covered under the warranty unless you can
talk fast and brow-beat the repair shop a little.

2) One way mice - If the mouse will only move in one direction (maybe
just a little jerky motion in the other) then this mouse has a problem
that is covered under warranty (and I have been told under an 
extended warranty).  The problem is related to a bad motion sensor that
no amount of cleaning will fix.  

-- 
= Enjoy!                                                                   = 
=          John DeRosa, Motorola, Inc, Cellular Infrastructure Group       =
= e-mail:    motcid!derosaj@uunet.uu.net, n1111@applelink.apple.com        =
=I do not hold by employer responsible for any information in this message =