[Samba] Fwd: PDC and NT_STATUS_WRONG_PASSWORD

[Rado Dr.]

Hello,

I have Samba 3.4.11 + OpenLDAP (slapd 2.4.11) as domain controller for
small windows network. Everything works (almost) ok, but sometimes
clients report delays with access on shares on primary domain
controller (PDC) and sometimes I had problems with adding new
computers to domain.

In /var/log/message I found these errors:

Feb 15 10:38:11 pdc winbindd[14772]: [2011/02/15 10:38:11,  0]
libsmb/clientgen.c:174(cli_receive_smb)
Feb 15 10:38:11 pdc winbindd[14772]:   Receiving SMB: Server stopped responding
several times

Also I found in samba log for pdc (/var/log/pdc) these errors:
[2011/02/15 10:39:33,  2] auth/auth.c:320(check_ntlm_password)
 check_ntlm_password:  Authentication for user [PDC$] -> [PDC$]
FAILED with error NT_STATUS_WRONG_PASSWORD

PDC$ is machine accout for domain controller, there is a slapcat for it:
dn: uid=PDC$,ou=winstations,ou=systems,dc=xxx,dc=xx
cn: PDC$
uid: PDC$
uidNumber: 1093
gidNumber: 515
homeDirectory: /dev/null
loginShell: /bin/false
description: Computer
gecos: Computer
structuralObjectClass: account
entryUUID: fbb03a50-cd26-102f-8d03-2b9195f48d12
creatorsName: cn=Manager,dc=xxx,dc=xx
createTimestamp: 20110215081149Z
objectClass: posixAccount
objectClass: account
objectClass: sambaSamAccount
sambaLogonTime: 0
sambaLogoffTime: 2147483647
sambaKickoffTime: 2147483647
sambaPwdCanChange: 0
sambaPwdMustChange: 2147483647
sambaSID: S-1-5-21-1310019973-247486850-1850952788-3186
sambaPrimaryGroupSID: S-1-5-21-1310019973-247486850-1850952788-515
sambaDomainName: XXX
sambaPwdLastSet: 1297758267
sambaAcctFlags: [W          ]
sambaLMPassword: DCBDBB104F82935EAAD3B435B51404EE
sambaNTPassword: 9AF22EE3057747FB3B24CA63B9EABC01
entryCSN: 20110215082430.158573Z#000000#000#000000
modifiersName: cn=Manager,dc=xxx,dc=xx
modifyTimestamp: 20110215082430Z


I'm googling about that error but I haven't found nothing about that
error on domain controller yet.
Can anybody help me?

Thanks a lot,
Rado Dr.