[Samba] Samba4: cannot create GPO from XP

[steve]

Hi everyone
S4 install on Debian 6

I can't seem to apply a GPO to an OU in XP. The GPO is created OK, no 
errors appear in ADUC but nothing appear in the sysvol share. I continue 
to have only the default:

root at capital:/usr/local/samba/var/locks/sysvol/eccmg.cupet.cu/Policies# 
ls -la
total 16
drwsrwsr-x  3 root    staff 4096 Jul 30 08:56 .
drwsrwsr-x  4 root    staff 4096 Jul 19 09:09 ..
drwxrws---+ 5 3000134 users 4096 Jul 30 08:56
{2D2153FA-7AD3-4DE5-94F7-D62B9677DC1A}
-rwsrwxr-x  1 root    staff    0 Apr 24 13:47 Policy.ini

Can anyone help me know where to start to debug this? I think it may be 
an acl/permissions issue.

What should the parent directory, in my case:
/usr/local/samba/var/locks/sysvol/eccmg.cupet.cu
be? Not:
drwsrwsr-x  4 root    staff
I don't think.

Cheers,
Steve