Apache with Suexec : simple cgi works, php scripts do not.

I have a problem setting up suexec with some php files.

I'm reinstalling a server wich worked fine for 3 years, unfortunately it was hacked (T0rkit) and I'm managing to reinstall everything.

Linux redhat 7.2
Kernel : 2.4.28
Apache : 1.3.33
Php : 4.3.10

What I want to do :

Use suexec only on ".sphp" scripts with are allowed to write on disks, .php scripts are not wrapped via suexec (as it worked before)

with php : no problem
http://www.team-project.net/test.php

with sphp (same code, just the sphp extension):-(
http://www.team-project.net/test.sphp

I just can't see why it worked before (php 1.3.26 / php 4.2.2) and why a get an "internal serveur error" for every .sphp script.

Lets get into details :

APACHE
#######################
/usr/local/apache/bin/httpd -l

Compiled-in modules:
  http_core.c
  mod_env.c
  mod_log_config.c
  mod_mime.c
  mod_negotiation.c
  mod_status.c
  mod_include.c
  mod_autoindex.c
  mod_dir.c
  mod_cgi.c
  mod_asis.c
  mod_imap.c
  mod_actions.c
  mod_userdir.c
  mod_alias.c
  mod_rewrite.c
  mod_access.c
  mod_auth.c
  mod_so.c
  mod_setenvif.c
  mod_ssl.c
  mod_php4.c
  mod_gzip.c
suexec: enabled; valid wrapper /usr/local/apache/bin/suexec

Ok suexec is installed with php,v let's move on with suexec config :

/usr/local/apache/bin/httpd/suexec -V

 -D DOC_ROOT="/home"
 -D GID_MIN=99
 -D HTTPD_USER="nobody"
 -D LOG_EXEC="/usr/local/apache/logs/cgi.log"
 -D SAFE_PATH="/usr/local/bin:/usr/bin:/bin"
 -D UID_MIN=99
 -D USERDIR_SUFFIX="www"

Ok no problem so far, all my web sites are underneath /home and all uid/gid are greater than 99, it seems all the requirements requested by suexec to works are fine : http://apache-server.com/tutorials/LPsuexec.html ("Requirements For suexec Operation" paragraph)

I've added this on my httpd.conf and restarted Apache

AddHandler cgi-script .sphp

A sample vhost :

<VirtualHost 213.186.34.46>
ServerAdmin webmaster@team-project.net
DocumentRoot /home/fft/team-project/www
User fft
Group fft
ServerName www.team-project.net
CustomLog /home/log/apache/team-project.log combined
ScriptAlias /cgi-bin/ /home/fft/team-project/cgi-bin/
</VirtualHost>

#######################

Now let's test with a shell script processed as a CGI :
http://www.team-project.net/showuser.cgi

it works fine and shows the user that suexex is using to process the CGI.

the script is as follow and chmoded 755 :

#!/bin/sh
echo "Content-type: text/plain"
echo ""
echo "Username="`whoami`

OK it seems to works fine with non php scripts :-/

#######################

Now let's try again our php script

When i click
http://www.team-project.net/test.sphp

the log (/usr/local/apache/logs/cgi.log) reads :
error: file has no execute permission: (/home/fft/team-project/www/test.sphp)

Ok no problem I do "chmod 755 /home/fft/team-project/www/test.sphp" and re-test (but weird, because I did not have this kind of error before...)

info: (target/actual) uid: (fft/fft) gid: (fft/fft) cmd: test.sphp

Ok it seems now it has worked, but guess what :

it's still diplaying "Internal Server Error"...

I'm really get lost hear, and the dozens of links I read (not that much information though...) does not help.

What I tried :

To recompile PHP using --enable-force-cgi-redirect on the command line ( I dit a "make clean" before)
An used another method from the 13-Jun-2004 05:26 message from this page : http://fr2.php.net/security.cgi-bin but with NO result (same error) :

Can you help me please ?

Thanks.