[Samba] samba3+acl just cant change user privileges from windows client

[ÕÔÓÀÃ÷]

Hi:
	Finally I setup up my ldap+samba+acl PDC server, every thing works perfect, except one:
I cant change user privileges on a file or directory from M$ client(win2kpro), but I can change group privileges,
if I use setfacl -m u:xxx:r aa.txt, it works well.
does anyone know this problem?

	My system is mandrake cooker, samba 3.0.1rc2

	best regards!