winbind sehr langsam - trusted domain

[2009/04/01 20:59:48,  1] winbindd/winbindd_cm.c:cm_prepare_connection(967)
  failed tcon_X with NT_STATUS_IO_TIMEOUT
[2009/04/01 20:59:58,  0] libsmb/namequery.c:saf_store(75)
  saf_store: refusing to store 0 length domain or servername!

...

[2009/04/02 07:00:37,  1] lib/util_tdb.c:tdb_wrap_log(886)                                                                               
  tdb(/var/lib/samba/mutex.tdb): tdb_lock failed on list 37 ltype=1 (Unterbrechung während des Betriebssystemaufrufs)                    
[2009/04/02 07:00:37,  0] lib/util_tdb.c:tdb_chainlock_with_timeout_internal(91)                                                         
  tdb_chainlock_with_timeout_internal: alarm (40) timed out for key SERVER-P in tdb /var/lib/samba/mutex.tdb                             
[2009/04/02 07:00:37,  1] lib/server_mutex.c:grab_named_mutex(71)                                                                        
  Could not get the lock for SERVER-P                                                                                                    
[2009/04/02 07:00:37,  0] winbindd/winbindd_cm.c:cm_prepare_connection(782)                                                              
  cm_prepare_connection: mutex grab failed for SERVER-P                                                                                  
[2009/04/02 07:01:14,  0] libsmb/namequery.c:saf_store(75)                                                                               
  saf_store: refusing to store 0 length domain or servername!                                                                            
[2009/04/02 07:01:14,  1] rpc_client/cli_pipe.c:cli_pipe_validate_current_pdu(755)                                                       
  cli_pipe_validate_current_pdu: RPC fault code DCERPC_FAULT_OP_RNG_ERROR received from host SERVER-P, pipe \lsarpc, fnum 0x71a0!        
[2009/04/02 07:07:57,  0] libsmb/namequery.c:saf_store(75)                                                                               
  saf_store: refusing to store 0 length domain or servername!                                                                            
[2009/04/02 07:07:59,  1] rpc_client/cli_pipe.c:cli_pipe_validate_current_pdu(755)                                                       
  cli_pipe_validate_current_pdu: RPC fault code DCERPC_FAULT_OP_RNG_ERROR received from host SERVER-P, pipe \lsarpc, fnum 0x70cb!

[2009/04/02 07:18:30,  0] libsmb/clientgen.c:cli_receive_smb(165)
  Receiving SMB: Server stopped responding                       
Connection failed: NT_STATUS_IO_TIMEOUT