[Samba] got NTLMSSP command 1, expected 3

[Firuz Azimov]

[2011/03/05 16:20:41,  1] libsmb/ntlmssp.c:335(ntlmssp_update)
  got NTLMSSP command 1, expected 3
[2011/03/05 16:21:00,  1] libsmb/ntlmssp.c:335(ntlmssp_update)
  got NTLMSSP command 1, expected 3
[2011/03/05 16:21:00,  1] libsmb/ntlmssp.c:335(ntlmssp_update)
  got NTLMSSP command 1, expected 3
[2011/03/05 16:21:00,  1] libsmb/ntlmssp.c:335(ntlmssp_update)
  got NTLMSSP command 1, expected 3
[2011/03/05 16:21:01,  1] libsmb/ntlmssp.c:335(ntlmssp_update)
  got NTLMSSP command 1, expected 3
[2011/03/05 16:21:05,  1] libsmb/ntlmssp.c:335(ntlmssp_update)
  got NTLMSSP command 1, expected 3
[2011/03/05 16:21:05,  1] libsmb/ntlmssp.c:335(ntlmssp_update)
  got NTLMSSP command 1, expected 3
[2011/03/05 16:21:06,  1] libsmb/ntlmssp.c:335(ntlmssp_update)
  got NTLMSSP command 1, expected 3
[2011/03/05 16:21:07,  1] libsmb/ntlmssp.c:335(ntlmssp_update)
  got NTLMSSP command 1, expected 3

This log from cache.log. Our authentication is ntlm-based.OS: Linux Gentoo,
Samba 3.5.6

Users getting popup auth windows randomly while surfing in the Internet.
Thanks a lot