[Samba] group permissions

[Emilio Casbas]

I´m having problems to access a group permissions resource, i´m a member 
of that group,
perms are ok, but i get this one error;

  UNIX uid 14027 is UNIX user 00514000, and will be vuid 102
[2005/10/18 10:43:49, 3] smbd/password.c:register_vuid(305)
  Adding homes service for user '00514000' using home directory: 
'/usr/local/etc3/./disco13/00514000'
[2005/10/18 10:43:49, 3] smbd/process.c:chain_reply(1254)
  Chained message
[2005/10/18 10:43:49, 3] smbd/process.c:switch_message(900)
  switch message SMBtconX (pid 5115) conn 0x0
[2005/10/18 10:43:49, 3] smbd/sec_ctx.c:set_sec_ctx(288)
  setting sec ctx (0, 0) - sec_ctx_stack_ndx = 0
[2005/10/18 10:43:49, 2] smbd/service.c:make_connection_snum(318)
  user '00514000' (from session setup) not permitted to access this 
share (MYSHARE)
[2005/10/18 10:43:49, 3] smbd/error.c:error_packet(147)
  error packet at smbd/reply.c(626) cmd=117 (SMBtconX) 
NT_STATUS_ACCESS_DENIED
[2005/10/18 10:43:49, 3] smbd/process.c:process_smb(1114)


I´m working in a samba environment with a mixture of windows-mapped 
groups and
groups that aren´t windows-mapped. I can see samba loads all sids for 
the groups i belong to, but the
ones that aren´t mapped don´t have sambaSID, so it calculates it.
Can this lead to a conflict so i can´t access a resource i should access?

Samba version is samba-3.0.20.

TIA
Emilio C.