install informix on hp-ux10.20

We install Netscape Certificate Server v1.0.1 on HPUX 10.20 (712/60) and get informix installation problems (see the attached /tmp/install.log). Any help will be appreciated! Simon. Installing Informix Engine will take approx. 20 minutes. The installation process consists of three steps. 1) Extraction 2) Installation 3) Configuration INFORMIXDIR is /usr/informix rootdbs size is 20000 group informix exist. user informix exist. TMPDIR has sufficient disk space. Extracting .... (This will take approx. 10 minutes) Extraction completed. Installing in /usr/informix .... Configuring OnLine .... Configuration Complete .... Bringing up the Engine ..... This will take some time ..... Checking the engine .... This will take some time ..... Tue Feb 17 09:42:39 1998 09:42:39 DR: DRAUTO is 0 (Off) 09:42:40 listener-thread: err = -25572: Network driver cannot bind aname to th e port. System error = 226. 09:42:40 Attempting to bring listener thread down 09:42:40 PANIC: Attempting to bring system downInstallation was not successful. Please check /tmp/install.log