[Samba] Problem with kerberos + winbind + samba + ADS

I use winbind Kerberos + + + Samba AD and I have the following problem:

The client from my network when connected to the resource until it shows
them spend about 10 files. After everything is going superbly. It is the
first connection. It also happens when they stop using documents network
for a while and then when they return to look for something in the
resources to take them back.

It may be the ticket kerberos?

It seems as though the meeting had a time of life. Never should cut the
service simply that the first connection takes to show the data.

My krb5.conf

[logging]
default =3D FILE:/var/log/krb5libs.log
kdc =3D FILE:/var/log/krb5kdc.log
admin_server =3D FILE:/var/log/kadmind.log

[libdefaults]
default_realm =3D xxx.ES=20
clockskew =3D 300
dns_lookup_realm =3D false
dns_lookup_kdc =3D false
ticket_lifetime =3D 24h
forwardable =3D yes

[realms]
xxx.ES =3D {
kdc =3D xxx.es=20
admin_server =3D xxx.es
default_domain =3D xxx.es
}
xxx.es =3D {
kdc =3D xxx.es
admin_server =3D xxx.es
default_domain =3D xxx
xxx =3D {
kdc =3D xxx.es
admin_server =3D xxx.es
default_domain =3D xxx
}
[domain_realm]
.xxx =3D xxx
.xxx.es =3D xxx.ES

[kdc]
profile =3D /var/kerberos/krb5kdc/kdc.conf

[appdefaults]
pam =3D {
debug =3D false
ticket_lifetime =3D 36000
renew_lifetime =3D 36000
forwardable =3D true
krb4_convert =3D false
}




Esteban Torres Rodr=C3=ADguez
=C3=81REA DE SOPORTE T=C3=89CNICO - Administraci=C3=B3n de Servidores
Subdirecci=C3=B3n de Sistemas Inform=C3=A1ticos
Empresa P=C3=BAblica Desarrollo Agrario y Pesquero,=20
email: etorres@dap.es=20

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