i got a 500 error while trying to load it. i looked in its error log, and saw a complaint that index.php is writeable by others. so i went to "/etc/suphp.conf", and changed the security options regarding others, to "true".
Please undo that in suphp.conf. The index.php file may not be writable by others as this is a security risk. Run a chmod 755 on index.php instead and ensure that it is owned by the web user and client group.
And do not change any foilder ownerships. It is not nescessary.