> А что в логах самбы?

[2012/10/10 15:39:01.010832,  0] rpc_server/srv_netlog_nt.c:714(_netr_ServerAuthenticate3)
  _netr_ServerAuthenticate3: netlogon_creds_server_check failed. Rejecting auth request from client TK505PC02Q machine account TK505PC02Q$

вот, эта самая задержка..

[2012/10/10 15:39:33.984952,  1] smbd/service.c:1070(make_connection_snum)
  tk505pc02q (::ffff:10.50.105.2) connect to service profiles initially as user lexa (uid=1000, gid=513) (pid 16743)
[2012/10/10 15:39:33.998747,  1] smbd/service.c:1070(make_connection_snum)
  tk505pc02q (::ffff:10.50.105.2) connect to service profiles initially as user tk505pc02q$ (uid=1131, gid=515) (pid 16743)
[2012/10/10 15:39:34.256683,  0] smbd/nttrans.c:2298(call_nt_transact_ioctl)
  call_nt_transact_ioctl(0x1401c4): Currently not implemented.
[2012/10/10 15:39:34.694351,  1] smbd/service.c:1070(make_connection_snum)
  tk505pc02q (::ffff:10.50.105.2) connect to service lexa initially as user lexa (uid=1000, gid=513) (pid 16743)
[2012/10/10 15:39:34.931919,  1] smbd/service.c:1070(make_connection_snum)
  tk505pc02q (::ffff:10.50.105.2) connect to service netlogon initially as user lexa (uid=1000, gid=513) (pid 16743)
[2012/10/10 15:39:35.366919,  1] smbd/service.c:1070(make_connection_snum)
  tk505pc02q (::ffff:10.50.105.2) connect to service COMMON initially as user lexa (uid=1000, gid=513) (pid 16743)
[2012/10/10 15:39:44.620450,  1] smbd/service.c:1251(close_cnum)
  tk505pc02q (::ffff:10.50.105.2) closed connection to service profiles
[2012/10/10 15:39:50.625328,  1] smbd/service.c:1251(close_cnum)
  tk505pc02q (::ffff:10.50.105.2) closed connection to service netlogon
[2012/10/10 15:39:56.631075,  1] smbd/service.c:1251(close_cnum)
  tk505pc02q (::ffff:10.50.105.2) closed connection to service profiles