[Samba] where samba store user's passwords ?

[Hubert Choma]

I have got tdbsam as backend in smb.conf
passdb backend = tdbsam

When user change password from windows XP file passdb.tdb schould change 
date because was updated, but I have still the same date IX 18 10:30.


[root at serwer private]# ls -al
razem 76
drwx------ 2 root root  4096 IX 11 20:25 .
drwxr-xr-x 7 root root  4096 XI  2 15:14 ..
-rw------- 1 root root 36864 IX 25 07:57 passdb.tdb
-rw------- 1 root root  8192 VII 24 07:57 schannel_store.tdb
-rw------- 1 root root  8192 IX 18 10:30 secrets.tdb
-rw------- 1 root root  7161 IX 19 15:28 smbpasswd

user changed password 31 X 2007 08:08:16 but date of the passdb.tdb file 
is still the same  (IX 18 2007 ).

pdbedit -Lv praktykanci
Unix username:        praktykanci
NT username:
Account Flags:        [U          ]
User SID:             S-1-5-21-2794518228-724393910-221713885-2096
Primary Group SID:    S-1-5-21-2794518228-724393910-221713885-513
Full Name:
Home Directory:
HomeDir Drive:
Logon Script:         praktykanci.CMD
Password last set:    Śr, 31 X 2007 08:08:16 CET
Password can change:  So, 19 I 2008 08:08:16 CET
Password must change: Wt, 29 I 2008 08:08:16 CET

Where samba with tdbsam store passwords ??
And how can i check whether user really changed password in tdbsam 
backend ?? How can I dump passwords ?
How can I convert passdb.tdb to smbpasswd style ??

Please help

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