samba - Oct 2006 - Unable to save permission changes on share access is denied - urgent due to live server !

Hi

I am unfortunate not able to change file and folder permissions on my
sharename$ from my XP workstation joined to the samba-ldap domain

I get the follwing error: unable to save permission changes on
"sharename"
access is denied


Please help

Here is my share setup

[sharename$]
        path = /home/sharename
        public = yes
        valid users = @groupname
        writable = yes
        writelist = @groupname
        printable = no
        create mask = 0666
        force group = groupname
        directory mask = 0777
      veto oplock files = /*.xls/

Here is my samba ldap info

I am using and a RHES 4 update 3 kernel 2.6.9-34
   samba-3.0.10-1.4E.6
   samba-client-3.0.10-1.4E.6
   samba-common-3.0.10-1.4E.6
   openldap-devel-2.2.13-4
   openldap-servers-2.2.13-4
   openldap-clients-2.2.13-4
   openldap-2.2.13-4
   nss_ldap-226-10

My PDC /etc/samba/smb.conf file look like this

[global]
        workgroup = DOMAINNAME
        netbios name = TNGCPH01
        username map = /etc/samba/smbusers
        server string = Samba Server %v
        security = user
        encrypt passwords = yes
        domain logons = Yes
        os level = 65
        preferred master = yes
        local master = yes
        domain master = yes
        wins support = yes
        log level = 3
        log file = /var/log/samba/%m.log
        max log size = 50

        obey pam restrictions = No
        ldap passwd sync = Yes
        passdb backend = ldapsam:ldap://127.0.0.1
        ldap admin dn = cn=Manager,dc=domainname,dc=com

# Ldap suffix

        ldap suffix = dc=clipper-group,dc=com
        ldap group suffix = ou=_GROUPS_
        ldap user suffix = ou=_USERS_
        ldap machine suffix = ou=_COMPUTERS_
        ldap idmap suffix = ou=_USERS_
        ldap ssl = no
        add user script = /usr/local/sbin/smbldap-useradd.pl -m "%u"
        ldap delete dn = Yes
        delete user script = /usr/local/sbin/smbldap-userdel.pl "%u"
        add machine script = /usr/local/sbin/smbldap-useradd.pl -w
"%u"
        add group script = /usr/local/sbin/smbldap-groupadd.pl -p "%g"
        delete group script = /usr/local/sbin/smbldap-groupdel.pl "%g"
        add user to group script = /usr/local/sbin/smbldap-groupmod.pl -m
"%u" "%g"
        delete user from group script = /usr/local/sbin/smbldap-groupmod.pl
-x "%u" "%g"
        set primary group script = /usr/local/sbin/smbldap-usermod.pl -g
"%g" "%u"

   idmap uid = 16777216-33554431
   idmap gid = 16777216-33554431
   template shell = /bin/false
   winbind use default domain = no

###########Share definitions and
configuration""""""""""


[homes]
        comment = Home Directories
        valid users = %S
        browseable = No
        read only = No

[netlogon]
        path = /home/clipper/netlogon/scripts
        browseable = No
        read only = yes


[sharename$]
        path = /home/sharename
        public = yes
        valid users = @groupname
        writable = yes
        writelist = @groupname
        printable = no
        create mask = 0666
        force group = groupname
        directory mask = 0777
       veto oplock files = /*.xls/