[Samba] Problem with read/write access

[Javier Arancibia]

I configure Samba in Share mode, I can see the files but i can't 
write/delete files in the directory "agenda" 
The directory /o/aplic/NACSEG/agenda have this permission  drwxrwxr-x and 
the owner and group is agendaglm nobody
I have all valid users in the smbpasswd and /etc/passwd

This is the smb.conf...........................THANKS!

[global]

   workgroup = GLMSA
   server string = Samba Server
   security = share
   load printers = no

   #log file = /var/samba/log/log.%m
   max log size = 50
   passdb backend = smbpasswd
   dns proxy = no

[agenda]
    comment = Directorio Proceso de Agenda
    path = /o/aplic/NACSEG/agenda/
    valid users = usr1,usr2,nobody
    write list = usr1,usr2,nobody
    writable = yes
    guest ok = no
    force user = agendaglm
    force group = nobody
    read only = no
    create mask = 0777
    security mask = 0777
    directory mask = 0777
    force directory mode = 0777
    directory security mask = 0777



Javier