Unable to connect to PostgreSQL server

X-Powered-By: PHP/4.1.2 Content-type: text/html An error occured on line 79 in file  ... /include/dblayer/pgsql.php.

PunBB reported: Unable to connect to PostgreSQL server

I have other php software using Pg just fine.  I'm using php-cgi because the hosting account uses suexec (php4 executes as my user id)

This is running on a debian Sarge install (it'll be upgraded to Etch as soon as the new hardware shows up, which might be never )

supaplex71@www:~$ dpkg -l php\* | grep -v ^un
Desired=Unknown/Install/Remove/Purge/Hold
| Status=Not/Installed/Config-files/Unpacked/Failed-config/Half-installed
|/ Err?=(none)/Hold/Reinst-required/X=both-problems (Status,Err: uppercase=bad)
||/ Name           Version        Description
+++-==============-==============-============================================
ii  php4-cgi       4.3.10-22      server-side, HTML-embedded scripting languag
ii  php4-cli       4.3.10-22      command-line interpreter for the php4 script
ii  php4-common    4.3.10-22      Common files for packages built from the php
ii  php4-curl      4.3.10-22      CURL module for php4
ii  php4-gd        4.3.10-22      GD module for php4
ii  php4-mysql     4.3.10-22      MySQL module for php4
ii  php4-pear      4.3.10-22      PEAR - PHP Extension and Application Reposit
ii  php4-pear-log  1.6.0-1.1      Log module for PEAR
ii  php4-pgsql     4.3.10-4       PostgreSQL module for php4

I see the php headers are showing up in the message to.  other php software isn't creating this.