Permission problem with LDAP and SuSE 9.3

Hi all, I made tests with LDAP in SuSE 9.3 and find a problem: "chgrp" and "chown" fails when changing ownerships from a group with more than 50 users, Yast Online Update don't report any correction or comments to this problem ! A friend made a nss_ldap compilation from source and the problem was solved, but I did a stop in NSCD daemon and the problem returns !!! Anyone had this problem ??? Maybe this is a bug from "Core Utils" or "NSS_LDAP" ?? Thanks All ! -- Atenciosamente, Roberto C. Duarte