the problem was: "when i select "For user" or "For subtree.", the Password Policy window appears, and after a second all the content disappear; i can see only a small grey square on the center of the window."
Solution:
the window appear empty due my notebook screen resolution, very narrow (1280x880); the server fds is on a vmware on this notebook, even more narrow!, 1024x768; the window that should appear, instead, is very height, i could see it on another pc
fyi Maurizio
389-users@lists.fedoraproject.org