safe_mode is locally On, ask your administrator if he can disable safe_mode for your eZ publish directory. Then installation should goes fine. You are using Apache 1.3 with mod_php so you can ignore last error.
safe_mode has flag PHP_INI_SYSTEM, this means that value can be set in php.ini or httpd.conf, not via .htaccess if you have access to those files you can do this by yoursefl.