I'm having a problem, with memory limit. server has total

Hi guys, I'm having a problem, with memory limit. server has total of 2G memory. It's a fresh install of WP multi site, 1 user, no posts/comments etc...

Error:
Fatal error: Allowed memory size of 262144 bytes exhausted (tried to allocate 12288 bytes) in /var/www/html/wp-admin/includes/dashboard.php on line 238

phpinfo: http://www.bizdevyourweb.com/p.php

php.ini - memory_limit=1G
wp-config.php - define('WP_MEMORY_LIMIT', '512M');
default-constants.php

if( is_multisite() ) {
define('WP_MEMORY_LIMIT', '512M');
} else {
define('WP_MEMORY_LIMIT', '254M');
if ( ! defined( 'WP_MAX_MEMORY_LIMIT' ) ) {
define( 'WP_MAX_MEMORY_LIMIT', '512M' );
}