In my Win2k Server/Client environment I'm having problems getting my clients to retain user account information in the security tab for NTFS file permissions. I'm able to select a user account from AD via the pulldown and give that user permissions, then when the permissions are closed and I go back to view them I get the icon with a head and question mark under the security permissions tab. It seems as though my clients are losing the user and group information for users accounts and just showing me the SID information that it gets that first time from Active Directory. This is causing me problems in a software tool as well because I'm not able to have my client sucessfully gather user group information from AD, this used to work for me. The odd thing is that all my users are able to log into the domain fine. Any thoughts why this is happening or how I can get it fixed?