slave server :Decrypt integrity check failed error

[FM]

Hello,
I'm trying to create a slave server (RHEL 3 on master and slave).
on slave :
I installed krb5-server
I create db with kdb5_util create -s
I configure and start kpropd
I have a krb5.keytab with : host/fqdn_slave at REALM (from master)

on the master :

I dump master DB and sync it witgh kprop :
32768 bytes sent.
65536 bytes sent.
69148 bytes sent.
Database propagation to slaver: SUCCEEDED

now I'm trying to kinit on the slave (I modify the krb5.conf on the 
station) but :

Dec 05 13:52:57 slave krb5kdc[5065](info): AS_REQ (5 etypes {16 23 1 3 
2}) 192.168.4.29(88): DECRYPT_SERVER_KEY: user at REALM for 
krbtgt/REALM at REALM, Decrypt integrity check failed

Do you have a idea ?

Thanks !