[Samba] problems with clients privileges

[nik600 hotmail]

hi

i am experiencing some problem with the configuring of samba as a PDC in a
Windows network, ive configured samba as PDC, created users, set there
password with smbpasswd and mapped unixgroup to nt group as follows:

System Operators (S-1-5-32-549) -> -1
Domain Users (S-1-5-21-3614578222-3141096634 -3044101766-513) -> users
Replicators (S-1-5-32-552) -> -1
Guests (S-1-5-32-546) -> -1
Power Users (S-1-5-32-547) -> users
Print Operators (S-1-5-32-550) -> -1
Administrators (S-1-5-32-544) -> -1
Domain Admins (S-1-5-21-3614578222-3141096634-3044101766-512) -> users
Domain Guests (S-1-5-21-3614578222-3141096634-3044101766-514) -> -1
Account Operators (S-1-5-32-548) -> -1
Backup Operators (S-1-5-32-551) -> -1
Users (S-1-5-32-545) -> -1

on the windows client i've set in the local group "Power Users" the domain
group "Domain Users"

the problem is that the user can log-in but they are extremely limited, they
can't set their home page, or set preferences in I.E., or preferences
regarding files (show hidden files...)

the only solution i've guessed at the moment is to add "Domain Users" samba
group to "Administrators" local group...it works! but it let the user to
login as a local administrator! and i dont' want it! ;-)

can you suggest me some controls to do?

the server runs samba 3.0.10 on a slackware 10.1 kernel 2.6.12

thanks in advance

nik