I used :rpm --import '<a href="http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xA7B02652%27" class="external free" title="http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xA7B02652'" rel="nofollow">http://pgp.mit.edu:11371/pks/lookup?op=get&search=0xA7B02652'</a> <pre>and the problem solved. I installed fedora-ds then used /usr/sbin/migrate-ds-admin.pl for migration from fedora ds-1.0.4. I stoped slapd-instance before this. it faild in start server: </pre> /usr/sbin/migrate-ds-admin.pl General.ConfigDirectoryAdminPwd=mypassword Beginning migration of Directory and Administration servers from /opt/fedora-ds . . . Beginning migration of directory server instances in /opt/fedora-ds . . . Your new DS instance 'slapd-ldap' was successfully created. Server failed to start !!! Please check errors log for problems Beginning migration of Administration server from /opt/fedora-ds . . . Creating Admin Server files and directories . . . Updating the configuration for the httpd engine . . . Starting admin server . . . The admin server was successfully started. Registering the directory server instances with the configuration directory server . . . Directory and Administration servers migration is complete. Please check output and log files for details. Exiting . . . what is wrong? now the slapd in /opt/fedora-ds doesn't work too!