sudo & X

[zelos <zelos@wanadoo.fr>]

Bonsoir,

Lorsque je suis connecté en atnt qu'utilisateur normal, 
je peux m'identifier en tant que root avec 'su' et je 
pouvais ensuite lancer n'importe quelle application en 
mode graphique(ex: cdbakeoven) sans problèmes.
Depuis ce matin, voilà ce que j'obtiens:

_KDE_IceTransmkdir: Owner of /tmp/.ICE-unix should be set to root
DCOPServer up and running.
trying to create local folder: File exists
trying to create local folder: File exists
trying to create local folder: File exists
Xlib: connection to ":0.0" refused by server
Xlib: Client is not authorized to connect to Server
kded: cannot connect to X server :0.0
DCOP aborting call from 'anonymous-2054' to 'kded'
ERROR: KUniqueApplication: DCOP communication error!
Xlib: connection to ":0.0" refused by server
Xlib: Client is not authorized to connect to Server
kdeinit: Can't connect to the X Server.
kdeinit: Might not terminate at end of session.
Xlib: connection to ":0.0" refused by server
Xlib: Client is not authorized to connect to Server
cdbakeoven: cannot connect to X server :0.0
ERROR: KUniqueApplication: Registering failed!
ERROR: KUniqueApplication: DCOP communication error!

Comment puis-je rétablir la situation?