[Samba] Help: Samba 3.0alpha23 using ldapsam cause "The tag is invalid."

[Tang]

Hi, please help in the scenario of using Samba 3.0alhpa23 + OpenLDAP as PDC. 
After joining an NT workstation to the samba domain, using the Windows User 
Manager for Domain to browse the domain causes "The tag is invalid." error 
message.

Part of smb.conf is as the following:

[global]
         passdb backend = ldapsam
         time server = Yes
         logon path =
         logon home =
         domain logons = Yes
         os level = 64
         preferred master = Yes
         domain master = Yes
         dns proxy = No
         wins support = Yes

If the "passdb backed" is changed to tdbsam, it is ok! But do not see any 
user groups list on the User Manager, even the groups are mapped using 
smbgroupedit. Why?

Samba is running on Debian/Linux Woody with kernel 2.2.20.

Anyone experience similar problems? Helps and comments are appreciated!

Thanks and regards,
tang.