Forum Linux.débutant probleme de login

Bonjour,

Depuis que j'ai redémarré ma machine, je ne parviens plus a me loguer avec l'utilisateur sp. Les autres fonctionnent.
Il y a un probleme de authorization file, mais je ne sais pas ce que je doit faire pour le résoudre.
Voici un extrait de messages :

Apr 2 00:08:43 pc-cave kde(pam_unix)[2465]: session opened for user sp by (uid=0)
Apr 2 00:08:45 pc-cave kdm: :0[2502]: Can't update authorization file in home dir /home/sp
Apr 2 00:08:47 pc-cave gconfd (sp-2547): starting (version 2.12.1), pid 2547 user 'sp'
Apr 2 00:08:47 pc-cave gconfd (sp-2547): Resolved address "xml:readonly:/etc/gconf/gconf.xml.mandatory" to a read-only configuration source at position 0
Apr 2 00:08:47 pc-cave gconfd (sp-2547): Resolved address "xml:readwrite:/home/sp/.gconf" to a writable configuration source at position 1
Apr 2 00:08:47 pc-cave gconfd (sp-2547): Resolved address "xml:readonly:/etc/gconf/gconf.xml.defaults" to a read-only configuration source at position 2
Apr 2 00:09:09 pc-cave kde(pam_unix)[2465]: session closed for user sp
Apr 2 00:09:11 pc-cave kdm: :0[2465]: Can't update authorization file in home dir /home/sp
Apr 2 00:09:17 pc-cave gconfd (sp-2547): GConf server is not in use, shutting down.
Apr 2 00:09:17 pc-cave gconfd (sp-2547): Exiting
Apr

Merci de votre aide,

SP