apache2 not processing php

[Graham Smith <graham@ruralescapes.co.uk>]

Hi folks,

I am sure this is a really simple to fix problem but I have struggled 
for hours without success. For some reason apache2 doesn't seem to want 
to process php. Well that's not 100% correct. When I request the default 
page http://www.crazysquirrel.com/ it seems to have a stab at processing 
but fails all over the place. When I request a particular page, such as 
http://www.crazysquirrel.com/index.php, I just get the file back 
unprocessed. The two links should show the behaviour unless I have 
managed to fix it.

I have apache1.3 installed but it is stopped - php was working fine with 
it. I have installed libapache2-mod-php4 and all went well (I have tried 
reinstalling it as well and that didn't fix the problem). I have checked 
that php4.conf and php4.load are symlinked into 
/etc/apache2/mods-enabled and the contents of the files look correct. I 
have tried including the line

PHPINIDir /etc/php4/apache2/

at the top of php4.conf but that didn't fix the problem either.

Any ideas? I'm totally stuck.

Many thanks.