package slapd 2.4.23-6ubuntu6 failed to install/upgrade: le sous-processus script post-installation installé a retourné une erreur de sortie d'état 1

[oForTuNa40]

crash on install :

Creating initial configuration... Loading the initial configuration from the ldif file () failed with
the following error while running slapadd:
    str2entry: invalid value for attributeType olcRootPW #0 (syntax 1.3.6.1.4.1.1466.115.121.1.15)
    slapadd: could not parse entry (line=1051)
dpkg : erreur de traitement de slapd (--configure) :
 le sous-processus script post-installation installé a retourné une erreur de sortie d'état 1

ProblemType: Package
DistroRelease: Ubuntu 11.04
Package: slapd 2.4.23-6ubuntu6
ProcVersionSignature: Ubuntu 2.6.38-12.51-generic 2.6.38.8
Uname: Linux 2.6.38-12-generic x86_64
NonfreeKernelModules: nvidia
AptOrdering:
 slapd: Install
 ldap-utils: Install
 slapd: Configure
 ldap-utils: Configure
Architecture: amd64
CNConfig: Error: command ['/usr/bin/ldapsearch', '-Q', '-LLL', '-Y EXTERNAL', '-H ldapi:///', '-b cn=config'] failed with exit code 255: ldap_sasl_interactive_bind_s: Can't contact LDAP server (-1)
Date: Thu Nov 10 16:42:43 2011
ErrorMessage: le sous-processus script post-installation installé a retourné une erreur de sortie d'état 1
InstallationMedia: Ubuntu 11.04 "Natty Narwhal" - Release amd64 (20110427.1)
SourcePackage: openldap
SysLog:

Title: package slapd 2.4.23-6ubuntu6 failed to install/upgrade: le sous-processus script post-installation installé a retourné une erreur de sortie d'état 1
UpgradeStatus: No upgrade log present (probably fresh install)

[Dave Walker (davewalker)]

Paramétrage de slapd (2.4.23-6ubuntu6) ...
  Creating new user openldap... done.
Usage: slappasswd [options]
  -c format crypt(3) salt format
  -g generate random password
  -h hash password scheme
  -n omit trailing newline
  -s secret new password
  -u generate RFC2307 values (default)
  -v increase verbosity
  -T file read file for new password
  Creating initial configuration... Loading the initial configuration from the ldif file () failed with
the following error while running slapadd:
    str2entry: invalid value for attributeType olcRootPW #0 (syntax 1.3.6.1.4.1.1466.115.121.1.15)
    slapadd: could not parse entry (line=1051)
dpkg : erreur de traitement de slapd (--configure) :
 le sous-processus script post-installation installé a retourné une erreur de sortie d'état 1