Thanks for your help.  I took the time to read about xauth, .Xauthority, xsm and
others.  

I found the problem in me changing the hostname of my PC.  I guess the
.Xauthority did not update.  I deleted it and created a new one. Voila back in
business.

Fernando

"Steven M. Bellovin" wrote:
> 
> In message <3C770D9C.339CAAE9@sinfo.net>, Fernando y Yohara writes:
> >Hello,
> >
> >When I run the startx command, the graphical environment background appears bu
> >t
> >no window opens.
> >
> >I did a capture of the XServer messages:
> >
> >xauth: (argv):1:  bad display name ":0" in "list" command
> >xauth: (argv):1:  bad display name ":0" in "add" command
> >xauth: (argv):1:  bad display name ":0" in "list" command
> >xauth: (argv):1:  bad display name ":0" in "add" command
> 
> You have some xauth commands in your .xinitrc file, it would seem, and
> there's something not right about them.  What do they say?  (Minus any
> real keys, of course.)
> 
>                 --Steve Bellovin, http://www.research.att.com/~smb
>                 Full text of "Firewalls" book now at http://www.wilyhacker.com

-- 
A lot of people approach risk as if it's the enemy when it's really fortune's
accomplice. (Sting)
Choose well. Your choice is brief, and yet endless. (Goethe)