[Samba] Strange problem with pdbedit -Lv : missing users ?

[Denis BUCHER]

Dear all,
I have a very strange problem with "pdbedit -Lv" under Samba 3.3.10, a
lot of users and machines are missing ! 

Strangely, all these missing machines and users are working perfectly
well. 

The problem is that I need to get their SID to be able to migrate to a
new server... 

TECHNICAL DETAILS : 

 	* Samba 3.3.10
 	* Number of machines :
 	* Unix : 128 machines
 	* pdbedit -Lv | grep "Unix" | grep "\$" | wc :
 	* 13 machines only
 	* Number of users :

	* Unix : 79 domain users
 	* pdbedit -Lv | grep "Unix" | grep -v "\$" | wc :
 	* 52 users only !

To be honest I don't absolutely need pdbedit to work, if I can list the
SID of all users by some other mean, it will be OK. 

Any help would be greatly appreciated. 

Denis 

P. S. I saw somewhere that it could be due to missing Unix users, but
these users are not missing.