how to turn off this function

[David Hoffman]

On Tue, 25 Jan 2005 12:37:00 -0800 (PST), BB Cao <pearlsmm at yahoo.com> wrote:
> Hi All,
> 
> I am bothering by such a function. Any helps on
> turning it off will be appreciated! The trouble
> happens when using gnome terminal on FC3, for example,
> 
> after type in, "cd dir", when I hit Tab key, if there
> are more than one directory or file named with "dir"
> at beginning, the screen shakes (or some action like
> refresh the whole window very quickly) so largely that
> make me feel very uncomfortable. It won't happen if
> hit Tab key after first hit, and it didn't happen when
> I was on FC2 either,   any tips on how to let it don't
> "shake"? Thanks.
> 

Is he talking about visual bell?