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From: CAH0@bunny.gte.com (Chuck Hoffman)
Newsgroups: comp.sys.mac,comp.sys.mac.programmer,comp.sys.mac.hardware
Subject: HELP, Jumpy Cursor
Message-ID: <9193@bunny.GTE.COM>
Date: 4 Jun 90 13:41:17 GMT
Sender: news@GTE.COM
Followup-To: comp.sys.mac
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Organization: GTE Laboratories, Inc.
Lines: 25


    I have a Mac-IIcx with color monitor, 4-meg, 80Mbyte HD.  No 
accellerator boards or exotic software.  Standard Macintosh board for 
monitor.  Running 6.0.4.
    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).
    IF the system proves to be virus-free (I have a teenager who keeps 
bringing "stuff" home from unknown sources) and IF the mouse is okay (I 
will try out one I use at work) are there other things I should look for?  
I remember seeing titles about jumpy cursors a while back, but did not 
read them because I didn't have the problem.
    This does not look like an RF magnetic interference problem.  Only the 
cursor is affected, and only when I move it with the mouse.
    Thanks for any help you can give me.
-Chuck


- Chuck Hoffman, GTE Laboratories, Inc.
cah0@bunny.gte.com
Telephone (U.S.A.) 617-466-2131
GTE VoiceNet: 679-2131
GTE Telemail: C.HOFFMAN