I have a strange problem on a CentOS-5.8 machine. I can only login as root. If I try to login with one of the user's names, it hangs for a long time. I thought it hung forever, but I just found that I do login after "su tim" after 5 minutes. It seems that the problem lies in repeated messages in /var/log/messages --------------------------- May 3 12:14:13 helen su: nss_ldap: failed to bind to LDAP server ldap://www.gayleard.com/: Can't contact LDAP server May 3 12:14:13 helen su: nss_ldap: reconnecting to LDAP server (sleeping 64 seconds)... --------------------------- The openldap server is not running, and I don't see why this authentication is being sought. There is nothing in /etc/pam.d/su or /etc/pam.d/login or /etc/ssh/sshd_config to suggest that ldap needs to be invoked, unless it is a part of system-auth . -- Timothy Murphy e-mail: gayleard /at/ eircom.net tel: +353-86-2336090, +353-1-2842366 s-mail: School of Mathematics, Trinity College Dublin