AIX 5.2 ldap client AD

I have been able to configure on an AIX 5.2 ldap.cfg so service starts correctly.
but when I try to log on with a windows user after entering the password login hangs and get no response.
I have set it up on Aix 5.3 with no problem but in Aix 5.2 I have not been able to log in.
ldap.cfg :

userattrmappath:/etc/security/ldap/2307aixuser.map
groupattrmappath:/etc/security/ldap/2307aixgroup.map
idattrmappath:/etc/security/ldap/aixid.map

I have modified the attributes so they are corrrectlky mapped to the AD attributes :

username        SEC_CHAR        uid                     s
spassword       SEC_CHAR        unixUserPassword                s
id              SEC_INT         uidNumber               s
pgrp            SEC_CHAR        gidNumber               s
gecos           SEC_CHAR        gecos                   s
home            SEC_CHAR        unixHomeDirectory               s
shell           SEC_CHAR        loginShell              s
lastupdate      SEC_INT         shadowlastchange        s

/etc/security/user :

default:

SYSTEM = "LDAP"

/usr/lib/security/methods.cfg :
LDAP:
        program = /usr/lib/security/LDAP
        program_64 = /usr/lib/security/LDAP64

Anyone has has expierenced a problem like this?

So, no start or errors and abort on start?