samba - Aug 2010 - NT_STATUS_NO_SUCH_USER floding my /var/log/messages

[REPOST]

Hi.

I have samba 3.5.4 as PDC - from some months. In the network i have 
Windows XP and Windows 7.

Windows 7 was joined with instructions from: 
http://wiki.samba.org/index.php/Windows7


Then i look at my /var/log/messages and i see floding:

FIRST
  _netr_ServerAuthenticate3: netlogon_creds_server_check failed. 
Rejecting auth request from client XYZ machine account XYZ$

THEN


Aug 20 11:16:23 serwergr smbd[25587]: [2010/08/20 11:16:23.817135,  0] 
auth/auth_sam.c:493(check_sam_security)
Aug 20 11:16:23 serwergr smbd[25587]:   check_sam_security: 
make_server_info_sam() failed with 'NT_STATUS_NO_SUCH_USER'
Aug 20 11:16:24 serwergr smbd[25587]: [2010/08/20 11:16:24.804017,  0] 
auth/auth_sam.c:493(check_sam_security)
Aug 20 11:16:24 serwergr smbd[25587]:   check_sam_security: 
make_server_info_sam() failed with 'NT_STATUS_NO_SUCH_USER'
Aug 20 11:16:24 serwergr smbd[25587]: [2010/08/20 11:16:24.810053,  0] 
auth/auth_sam.c:493(check_sam_security)
Aug 20 11:16:24 serwergr smbd[25587]:   check_sam_security: 
make_server_info_sam() failed with 'NT_STATUS_NO_SUCH_USER'
Aug 20 11:16:24 serwergr smbd[25587]: [2010/08/20 11:16:24.816134,  0] 
auth/auth_sam.c:493(check_sam_security)
Aug 20 11:16:24 serwergr smbd[25587]:   check_sam_security: 
make_server_info_sam() failed with 'NT_STATUS_NO_SUCH_USER'
Aug 20 11:16:24 serwergr smbd[25587]: [2010/08/20 11:16:24.821974,  0] 
auth/auth_sam.c:493(check_sam_security)
Aug 20 11:16:24 serwergr smbd[25587]:   check_sam_security: 
make_server_info_sam() failed with 'NT_STATUS_NO_SUCH_USER'
Aug 20 11:16:24 serwergr smbd[25587]: [2010/08/20 11:16:24.827983,  0] 
auth/auth_sam.c:493(check_sam_security)
Aug 20 11:16:24 serwergr smbd[25587]:   check_sam_security: 
make_server_info_sam() failed with 'NT_STATUS_NO_SUCH_USER'
Aug 20 11:16:25 serwergr smbd[25587]: [2010/08/20 11:16:25.817975,  0] 
auth/auth_sam.c:493(check_sam_security)
Aug 20 11:16:25 serwergr smbd[25587]:   check_sam_security: 
make_server_info_sam() failed with 'NT_STATUS_NO_SUCH_USER'
Aug 20 11:16:25 serwergr smbd[25587]: [2010/08/20 11:16:25.823870,  0] 
auth/auth_sam.c:493(check_sam_security)
Aug 20 11:16:25 serwergr smbd[25587]:   check_sam_security: 
make_server_info_sam() failed with 'NT_STATUS_NO_SUCH_USER'
Aug 20 11:16:25 serwergr smbd[25587]: [2010/08/20 11:16:25.829819,  0] 
auth/auth_sam.c:493(check_sam_security)
Aug 20 11:16:25 serwergr smbd[25587]:   check_sam_security: 
make_server_info_sam() failed with 'NT_STATUS_NO_SUCH_USER'
Aug 20 11:16:25 serwergr smbd[25587]: [2010/08/20 11:16:25.835824,  0] 
auth/auth_sam.c:493(check_sam_security)
Aug 20 11:16:25 serwergr smbd[25587]:   check_sam_security: 
make_server_info_sam() failed with 'NT_STATUS_NO_SUCH_USER'
Aug 20 11:16:25 serwergr smbd[25587]: [2010/08/20 11:16:25.842821,  0] 
auth/auth_sam.c:493(check_sam_security)
Aug 20 11:16:25 serwergr smbd[25587]:   check_sam_security: 
make_server_info_sam() failed with 'NT_STATUS_NO_SUCH_USER'
Aug 20 11:16:26 serwergr smbd[25587]: [2010/08/20 11:16:26.832697,  0] 
auth/auth_sam.c:493(check_sam_security)
Aug 20 11:16:26 serwergr smbd[25587]:   check_sam_security: 
make_server_info_sam() failed with 'NT_STATUS_NO_SUCH_USER'
Aug 20 11:16:26 serwergr smbd[25587]: [2010/08/20 11:16:26.839871,  0] 
auth/auth_sam.c:493(check_sam_security)
Aug 20 11:16:26 serwergr smbd[25587]:   check_sam_security: 
make_server_info_sam() failed with 'NT_STATUS_NO_SUCH_USER'
A

What is going on ?

Nobody on the site comunicate any problems with the network.

I try to kill process 25587, biu it appers again with another PID.

Best regards,
I.Piasecki