I am also having some problems getting Z3950 to work, and the problem seems to be with starting the z3950 daemon. I am using CentOS 4.4 with all updates installed (as of November 2, 2006). CentOS 4.4 is based on Red Hat ES4, I believe. I am using Koha 2.2.5 (2.2.6 came out after the installation process was started). The Koha web sites are located in /var/www/koha/opac, and /var/www/koha/intranet, rather than in the /usr/local/koha... directory. According to the Koha User Guide, if you are having problems starting the z3950 daemon, you need to change the user of the .../z3950-daemon-launch.sh file from www-data to root. The file was originally owned by apache, and was in the apache group. I have changed the user from apache to root, and also the group from apache to root. In neither case would the daemon start, giving the same "This account is currently not available" error message. I have also tried changing the owner to root and the group to apache, with the same error message. I am currently accessing the Koha applications inside an internal network (no public URL at the moment). A public IP address is available and should be up and running in another day or two. Domain names are available, and when the public IP address is up, they should be accessible by those domain names.