error with sasl

[chechu chechu <chechuironman@hotmail.com>]

hi
Im building pdc with ldap+kerberos+afs, and when I try to check if its
correct i get this error 
root@shogun:/etc/ldap/schema# ldapsearch -H ldap://shogun.ironman.es/ -b
dc=ironman,dc=es 

SASL/DIGEST-MD5 authentication started
Please enter your password: 
ldap_sasl_interactive_bind_s: Internal (implementation specific) error
(80)
        additional info: SASL(-13): user not found: no secret in
database

root@shogun:/etc/ldap/schema# ldapsearch -H ldap://shogun.ironman.es/ -D
"uid=prueba,ou=people,dc=ironman,dc=es" 

SASL/DIGEST-MD5 authentication started
Please enter your password: 
ldap_sasl_interactive_bind_s: Internal (implementation specific) error
(80)
        additional info: SASL(-13): user not found: no secret in
database
thanks