The following was filed automatically by setroubleshoot:

Resúmen:

SELinux is preventing the /usr/bin/kdm from using potentially mislabeled files
(/home/FAMM/.Xauthority-n).

Descripción Detallada:

SELinux has denied kdm access to potentially mislabeled file(s)
(/home/FAMM/.Xauthority-n). This means that SELinux will not allow kdm to use
these files. It is common for users to edit files in their home directory or tmp
directories and then move (mv) them to system directories. The problem is that
the files end up with the wrong file context which confined applications are not
allowed to access.

Permitiendo Acceso:

If you want kdm to access this files, you need to relabel them using restorecon
-v '/home/FAMM/.Xauthority-n'. You might want to relabel the entire directory
using restorecon -R -v '/home/FAMM'.

Información Adicional:

Contexto Fuente               system_u:system_r:xdm_t:s0-s0:c0.c1023
Contexto Destino              unconfined_u:object_r:xauth_home_t:s0
Objetos Destino               /home/FAMM/.Xauthority-n [ file ]
Fuente                        kdm
Dirección de Fuente          /usr/bin/kdm
Puerto                        <Desconocido>
Nombre de Equipo              (removed)
Paquetes RPM Fuentes          kdm-4.3.1-4.fc12
Paquetes RPM Destinos         
RPM de Políticas             selinux-policy-3.6.32-7.fc12
SELinux Activado              True
Tipo de Política             targeted
MLS Activado                  True
Modo Obediente                Enforcing
Nombre de Plugin              home_tmp_bad_labels
Nombre de Equipo              (removed)
Plataforma                    Linux (removed) 2.6.31-33.fc12.i686 #1 SMP Thu
                              Sep 17 15:56:11 EDT 2009 i686 i686
Cantidad de Alertas           1
Visto por Primera Vez         lun 21 sep 2009 20:49:33 CDT
Visto por Última Vez         lun 21 sep 2009 20:49:33 CDT
ID Local                      ece39e7f-2ca9-4a74-bf1a-37c02a75e7dd
Números de Línea            

Mensajes de Auditoría Crudos 

node=(removed) type=AVC msg=audit(1253584173.465:18): avc:  denied  { setattr } for  pid=1328 comm="kdm" name=".Xauthority-n" dev=sda1 ino=10292 scontext=system_u:system_r:xdm_t:s0-s0:c0.c1023 tcontext=unconfined_u:object_r:xauth_home_t:s0 tclass=file

node=(removed) type=SYSCALL msg=audit(1253584173.465:18): arch=40000003 syscall=15 success=no exit=-13 a0=bf9d321a a1=180 a2=bf9d321a a3=9c4eab0 items=0 ppid=1300 pid=1328 auid=500 uid=500 gid=500 euid=500 suid=500 fsuid=500 egid=500 sgid=500 fsgid=500 tty=(none) ses=1 comm="kdm" exe="/usr/bin/kdm" subj=system_u:system_r:xdm_t:s0-s0:c0.c1023 key=(null)


audit2allow suggests:

#============= xdm_t ==============
allow xdm_t xauth_home_t:file setattr;