[Samba] group problem on NT4 domain

[steven.TSE]

Hi,
 
Installed latest Samba3.0.2a on NT4 domain, security = domain and net rpc
join successfully.
 
everything work great, but group permission failed, error message is
"user_in_winbind_group_list: nametogid for group NTGROUP failed".  
 
smb.conf on shares as below:
=====================
omitted base configurations...
 
[shareA]
path = /public/shareA
valid users =  <mailto:'@NT\Domain> '@NT\Domain Users'
write list = NT\steven
 
 
the conf is simple but error occured.  No one can access to shareA, a login
prompted out for user/pass.  BTW, it has no problem at all if only use user
rather than group.  Please kindly help or advise, thankyou.
 
 
Best Regards,
Steven Tse