First of all thank you to the developers for this brilliant control panel. The suPHP module version 0.6.3, default Debian one not compiled version, Apache 2.2.9, PHP 5.2.6-1, and ISPConfig 126.96.36.199 are installed on Debian Lenny. This is a custom virtual host with SSL and the port 80 one is virtually the same without the SSL directives. Code: <VirtualHost 188.8.131.52:443> ServerName domainname.com ServerAlias www.domainname.com ServerAdmin firstname.lastname@example.org DocumentRoot /var/www/domain/public_html SuexecUserGroup www-data www-data <Directory /var/www/domain/public_html> Options FollowSymLinks AllowOverride Indexes AuthConfig Limit FileInfo Order allow,deny Allow from all suPHP_Engine on #suPHP_UserGroup www-data www-data AddHandler x-httpd-php .php .php3 .php4 .php5 suPHP_AddHandler x-httpd-php </Directory> SSLEngine On SSLCertificateFile /etc/apache2/ssl/www/www.domain.crt SSLCertificateKeyFile /etc/apache2/ssl/www/www.domain.cert.key </VirtualHost> If you are wondering whether it is the custom vhost that could be causing it, well, the same 500 server error happens with sites enabled with the ISPConfig control panel with suPHP enabled. This is the suphp.conf: Code: [global] ;Path to logfile logfile=/var/log/suphp/suphp.log ;Loglevel loglevel=info ;User Apache is running as webserver_user=www-data ;Path all scripts have to be in docroot=/var/www ;Path to chroot() to before executing script ;chroot=/mychroot ; Security options allow_file_group_writeable=true allow_file_others_writeable=false allow_directory_group_writeable=true allow_directory_others_writeable=false ;Check wheter script is within DOCUMENT_ROOT check_vhost_docroot=true ;Send minor error messages to browser errors_to_browser=false ;PATH environment variable env_path=/bin:/usr/bin ;Umask to set, specify in octal notation umask=0077 ; Minimum UID min_uid=100 ; Minimum GID min_gid=100 [handlers] ;Handler for php-scripts x-httpd-suphp=php:"/usr/bin/php-cgi" ;Handler for CGI-scripts x-suphp-cgi=execute:!self Basically what I need is a good solution to securely run PHP for MODx or Joomla with either suPHP or fast-cgi without having to chmod directories to 777 which surely is a security risk. The files and directories in public_html are owned by a apache user with uid/gid 1***/1*** and are also writable by the custom ftp user. I have scoured the forums for users that have had similar issues and tried various things to no avail. I would appreciate any help as this is now the only sticking point with my installation.