I think I found a new one. Just set up a new RHEL 4 box, dowloaded the latest version of urchin available (urchin5703_redhat_ent3.tar.gz) and get the following errror when it tries to start up during the installation process:
Starting the Urchin webserver and scheduler daemon
/usr/local/urchin/bin/urchinwebd: error while loading shared libraries: libgdbm.so.2: cannot open shared object file: No such file or directory
Urchin webserver failed to start
Urchin scheduler started
Anyone have any ideas?