Change ownership in plone and LDAP

Hello

I run Zope 2.9.4/Python 2.4.3/Plone 2.5/LDAPUserFolder
2.7/LDAPMultiPlugins-1_3

LDAP server runs with openldap 2.2.13

I would to change the owner of folders or files from plone

>From Sharing Tab, i click on "Change
ownership"

 	=> The "New Owner" list is empty.

It seems that openldap returns informations to the Zope
Server : log from 
openldap + tcpdump !
And if i run a search query from ZMI (acl_users/...), it's
ok.

Any idea ?

Thanks in advance

cc


Prenez note de ma nouvelle adresse : christophe.caronjouy.inra.fr

***********************************************************
  Christophe Caron - INRA
  Mathematique, Informatique et Genome
  Domaine de Vilvert 78350 Jouy-en-Josas
  Web: http://migale.jouy.inra.f
r/
  Tel: 01-34-65-28-88  Email: christophe.caronjouy.inra.fr 
***********************************************************


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