CentOS - Apr 2013 - Why is my default DISPLAY suddenly :3.0?

I'm on Fedora 6.3. After a reboot, some proprietary software didn't want
to run. I found out that the startup script for said software manually 
sets DISPLAY to :0.0, which I know is not a good idea, and I can fix.

However, this still doesn't explain why my default X DISPLAY is suddenly 
:3.0.

-- 
Joakim Ziegler  -  Supervisor de postproducci?n  -  Terminal
joakim at terminalmx.com   -   044 55 2971 8514   -   5264 0864

On Thu, 25 Apr 2013, Joakim Ziegler wrote:
> I'm on Fedora 6.3. After a reboot, some proprietary software didn't
want
> to run. I found out that the startup script for said software manually
> sets DISPLAY to :0.0, which I know is not a good idea, and I can fix.
I'd thought that :0.0 was the norm.
> However, this still doesn't explain why my default X DISPLAY is
suddenly
> :3.0.
-- 
Michael   hennebry at web.cs.ndsu.NoDak.edu
"On Monday, I'm gonna have to tell my kindergarten class,
whom I teach not to run with scissors,
that my fiance ran me through with a broadsword."  --  Lily