This is my config.php
<?php

date_default_timezone_set( 'Europe/Berlin' );
define ( 'EZP_INI_FILEMTIME_CHECK', false );
define ( 'EZP_AUTOLOAD_ALLOW_KERNEL_OVERRIDE', false );
define ( 'EZP_USE_BUNDLED_COMPONENTS', true );
define ( 'EZP_INI_FILE_PERMISSION' , 0666 );

?>

When I install eZ with this config.php the installer finshes the install that is fine. But when i open the site after the last installer step the installer starts over again.

After i cleared the caches the site showed up fine. I guess someone forgot to clear all caches after the installer has finished.