[Samba] net group members ?

[Lapin(c)]

Hi,

when I try :
net group members "Domain Users"
the results is correct

when I try :
net group members "Domain Admins"
I get back the following message :
[Mon Oct  3 14:20:36 2005
, 0] rpc_client/cli_pipe.c:rpc_api_pipe(424)
  cli_pipe: return critical error. Error was Call timed out: server did
not respond after 10000 milliseconds

any idea ???

many thanks for your help