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From: dmr@csli.Stanford.EDU (Daniel M. Rosenberg)
Newsgroups: comp.sys.mac,comp.sys.mac.programmer,comp.sys.mac.hardware
Subject: Re: HELP, Jumpy Cursor
Message-ID: <13927@csli.Stanford.EDU>
Date: 4 Jun 90 17:09:20 GMT
References: <9193@bunny.GTE.COM> <1990Jun4.145556.1636@msuinfo.cl.msu.edu>
Sender: dmr@csli.Stanford.EDU (Daniel M. Rosenberg)
Followup-To: comp.sys.mac
Distribution: na
Organization: World Otherness Ministries
Lines: 29

In <1990Jun4.145556.1636@msuinfo.cl.msu.edu> gurney@cpsin2.uucp (Eddy J Gurney) writes:

>In article <9193@bunny.GTE.COM> CAH0@bunny.gte.com (Chuck Hoffman) writes:
>>
>>    Lately I have started seeing the cursor jump around a bit.  A small 
>>move with the mouse sometimes makes random sized moves with the cursor; 
>>large moves (---) mix in with small moves (-), making life difficult when 
>>trying to do fine work on the screen, or even select menu items (last 
>>night I tried for the Get Info menu item, and got Duplicate instead).

>Well, it sounds to me like your system is NOT virus free.  According to the
>documentation for Disinfectant 1.8, there's a virus that does exactly what
>you're talking about.  Here's the info below:

I'd get a spare mouse and check that. I am the Resident Computer Coordinator
in my Stanford dorm, which means I play with everyone's Macintoshes. Out
of about twenty new Macs in the dorm owned by students, at least three
have developed the problem you described, and it had nothing to do with
any virus -- just a crappy mouse.

Some of the mice were new adb types (plastic ball) and some were similar
but a bit older (metal ball). The electronics inside were just plain bad,
and the whole mouse unit had to be replaced.

Apple quality.

-- 
# Daniel M. Rosenberg     //  Stanford CSLI  // Eat my opinions, not Stanford's.
# dmr@csli.stanford.edu  // decwrl!csli!dmr // dmr%csli@stanford.bitnet