LinuxQuestions.org - samba pdc blocks write permissions on windows?

I have a perfectly working network with a few windows machines and samba as a pdc.
I have one problem i would like to understand though: why can`t the users write on the windows` machine partition? They need to be registered as users on the pc to be able to write or am i using some config that is blocking the acess?

Although it can be a good thing i need to solve this as i will probably have to allow write acess on those partitions.

My smb.conf:

Code:

[global]

  workgroup = local

  netbios name = server

  server string = CRUX

  passdb backend = tdbsam

  security = user

  username map = /etc/samba/smbusers

  name resolve order = wins bcast hosts

  domain logons = yes

  preferred master = yes

  domain master = yes

  local master = yes

  wins support = yes

  os level = 100

  logon drive = Z:

  add machine script = /usr/sbin/useradd -s /bin/false/ -d /var/lib/nobody %u

  idmap uid = 15000-20000

  idmap gid = 15000-20000

  template shell = /bin/bash

  log level = 3

  socket options = TCP_NODELAY SO_SNDBUF=8192 SO_RCVBUF=8192

  hide unreadable = yes

  hide dot files = yes



[homes]

  comment = directorio do utilizador

  valid users = %S

  read only = no

  browsable = no

  veto files = /*.exe/



[netlogon]

  comment = Network Logon Service

  path = /home/samba/netlogon/

  admin users = Administrador

  valid users = %U

  read only = no

  guest ok = yes

  writable = no

  share modes = no

  browsable = no



[producao]

  comment = directorio da producao

  path = /home/samba/tecnico/producao

  public = yes

  valid users = @tecnico

  force group = tecnico

  create mask = 0660

  directory mask = 0771

  writable = yes

  veto files = /*.mp3/*.wma/*.wmv/*.avi/*.mpg/*.wav/*.exe/

  case sensitive = yes

  preserve case = yes