dummy output module chirps uninvited

[Al Sten-Clanton]

Hello!

Twice today, I was on my Linux box, using Orca.  Suddenly, I'd hit a key 
and get babbled at by the dummy output module.  This happened three or 
four times last week.  Whatever key I hit after this, I'd get the 
message.  It was always the same message.  It was well that I was 
running Speakup as well, so that I could shut down.  A couple of times 
when this happened last week, even booting up by pushing the on/off 
button brought me right into the dummy output messag.  This never 
happened before last week.

I'm using Fedora 18, and have updated it fairly regularly, on this 
64-bit machine.

Has anybody else suffered this affliction, or can anybody think what may 
cause it?  Thanks!

Al