wordpress/wp-admin/profile-update.php

<?php

$parent_file = 'profile.php';
$submenu_file = 'profile.php';
require_once('admin.php');

check_admin_referer('update-profile_' . $user_ID);

if ( !$_POST )
	wp_die( __('No post?') );

$errors = edit_user($user_ID);

if ( is_wp_error( $errors ) ) {
	foreach( $errors->get_error_messages() as $message )
		echo "$message<br />";
	exit;
}

do_action('personal_options_update');

if ( 'profile' == $_POST['from'] )
	$to = 'profile.php?updated=true';
else
	$to = 'profile.php?updated=true';

wp_redirect( $to );
exit;

?>