[wplug] php scripts won't run

[Zach]

I'm having a vexing problem getting php scripts to load.

When I try to load one locally such as /var/www/phpsysinfo/index.php
it opens a dialog box asking me whether I'd like to download it or
open with an editor, it never renders the PHP script. I also tried
remotely by loading http://www.club.cc.cmu.edu/~chaos/foo.php in my
browser and it just prints out the file contents.

I verified that apache2 has the php module loaded:

netrek:~# a2enmod php5
This module is already enabled!

I also confirmed that in /etc/apache2/mods-available/dir.conf
DirectoryIndex has an entry for index.php:
<IfModule mod_dir.c>

          DirectoryIndex index.html index.cgi index.pl index.php index.xhtml ind
ex.htm

</IfModule>

And I also confirmed that in /etc/apache2/mods-available/php5.conf  it
has as apropriate AddType entry:
<IfModule mod_php5.c>
  AddType application/x-httpd-php .php .phtml .php3
  AddType application/x-httpd-php-source .phps
</IfModule

Here are the packages I have installed:

ii  libapache2-mod-php5                                     5.2.4-2+b1
                   server-side, HTML-embedded scripting languag
ii  php5                                                    5.2.4-2
                   server-side, HTML-embedded scripting languag
ii  php5-cgi                                                5.2.4-2+b1
                   server-side, HTML-embedded scripting languag
ii  php5-cli                                                5.2.4-2+b1
                   command-line interpreter for the php5 script
ii  php5-common                                             5.2.4-2+b1
                   Common files for packages built from the php
ii  apache2                                                 2.2.6-3
                   Next generation, scalable, extendable web se
ii  apache2-common                                          2.0.55-4
                   next generation, scalable, extendable web se
ii  apache2-mpm-prefork                                     2.2.6-3
                   Traditional model for Apache HTTPD
ii  apache2-utils                                           2.2.6-3
                   utility programs for webservers
ii  apache2.2-common                                        2.2.6-3
                   Next generation, scalable, extendable web se
ii  iceweasel                                               2.0.0.11-1
                    lightweight web browser based on Mozilla

Must I change /etc/apache2/apache2.conf somehow to get this working?

Running Debian lenny. So apache is passing the php files as if they
were just normal text files or something. They are never passed off to
the php module and executed for some reason. Any help would be greatly
appreciated. As far as I can tell it *should* work but doesn't
obviously.

Zac