Error while ldap entry add

["Valentin A. Alekseev" <valeks@school56.spb.ru>]

I'm trying to use SAMBA with LDAP as password backend and getting the 
following error
on slapd while using samba-2.2.2/examples/LDAP/import2_smbpasswd.pl 
(Net::LDAP module):
===> cut here <===
dn2entry_r: dn: "UID=VALEKS,O=SCHOOL 56 IT DEPARTMENT,C=RU"
=> dn2id( "UID=VALEKS,O=SCHOOL 56 IT DEPARTMENT,C=RU" )
=> ldbm_cache_open( "/usr/local/var/openldap-ldbm/dn2id.dbb", 514, 600 )
<= ldbm_cache_open (cache 0)
<= dn2id NOID
dn2entry_r: dn: "O=SCHOOL 56 IT DEPARTMENT,C=RU"
=> dn2id( "O=SCHOOL 56 IT DEPARTMENT,C=RU" )
=> ldbm_cache_open( "/usr/local/var/openldap-ldbm/dn2id.dbb", 514, 600 )
<= ldbm_cache_open (cache 0)
<= dn2id NOID
send_ldap_result: conn=2 op=2 p=2
send_ldap_result: 21::lmpassword: value #0 invalid per syntax
send_ldap_response: msgid=3 tag=105 err=21
ber_flush: 53 bytes to sd 9
===> cut here <===
OpenLDAP is 2.0.17
OS is FreeBSD 4.4-RELEASE
Samba is 2.2.2