Samba не проходит авторизация по гостю

Проблема в следующем: есть самба сервер, авторизация идет и через домен и так, все машины работают нормально, а вот одна машина с Вистой с недавнего времени отвалилась и не может попасть на сервак, в логах самба пишет следующее:

[2008/10/01 18:08:55, 3] auth/auth_sam.c:check_sam_security(281)
  check_sam_security: Couldn't find user '������' in passdb.
[2008/10/01 18:08:55, 2] auth/auth.c:check_ntlm_password(319)
  check_ntlm_password:  Authentication for user [������] -> [������] FAILED with error NT_STATUS_NO_SUCH_USER
[2008/10/01 18:08:55, 3] smbd/sesssetup.c:do_map_to_guest(45)
  No such user ������ [MAROV] - using guest account
[2008/10/01 18:08:55, 3] smbd/sec_ctx.c:push_sec_ctx(208)
  push_sec_ctx(0, 0) : sec_ctx_stack_ndx = 1
[2008/10/01 18:08:55, 3] smbd/uid.c:push_conn_ctx(358)
  push_conn_ctx(0) : conn_ctx_stack_ndx = 0
[2008/10/01 18:08:55, 3] smbd/sec_ctx.c:set_sec_ctx(241)
  setting sec ctx (0, 0) - sec_ctx_stack_ndx = 1
[2008/10/01 18:08:55, 3] smbd/sec_ctx.c:pop_sec_ctx(356)
  pop_sec_ctx (0, 0) - sec_ctx_stack_ndx = 0
[2008/10/01 18:08:55, 3] smbd/sec_ctx.c:push_sec_ctx(208)
  push_sec_ctx(0, 0) : sec_ctx_stack_ndx = 1
[2008/10/01 18:08:55, 3] smbd/uid.c:push_conn_ctx(358)
  push_conn_ctx(0) : conn_ctx_stack_ndx = 0
[2008/10/01 18:08:55, 3] smbd/sec_ctx.c:set_sec_ctx(241)
  setting sec ctx (0, 0) - sec_ctx_stack_ndx = 1
[2008/10/01 18:08:55, 3] smbd/sec_ctx.c:pop_sec_ctx(356)
  pop_sec_ctx (0, 0) - sec_ctx_stack_ndx = 0
[2008/10/01 18:08:55, 3] smbd/password.c:register_vuid(280)
  User name: user       Real name:
[2008/10/01 18:08:55, 3] smbd/password.c:register_vuid(301)
  UNIX uid 1000 is UNIX user user, and will be vuid 105
[2008/10/01 18:09:05, 3] smbd/process.c:timeout_processing(1328)
  timeout_processing: End of file from client (client has disconnected).

Конфиг самбы такой:

cat /etc/samba/smb.conf
[global]
   workgroup = workgroup
   server string = FileServer
   security = user
unix extensions = no
hosts allow = 10.0.0. 127.
load printers = no
smb ports = "139"

guest account = user
log file = /var/log/samba.%m
max log size = 50
log level = 3

   socket options = TCP_NODELAY

local master = no
os level = 33
domain master = no

wins support = yes
wins server = 10.0.0.5

dns proxy = no
restrict anonymous = no
preferred master = no
max protocol = NT
acl compatibility = winnt
ldap ssl = No
server signing = Auto
map to guest = Bad User
guest ok = yes
dos charset = cp1251
unix charset = cp1251
netbios name = FileServer

Может есть какие идеи куда копать? В гугле нашел совет про указание порта, но не помогло...