diff --git a/wp-admin/admin-header.php b/wp-admin/admin-header.php
index d6f73bea8..fec9451c7 100644
--- a/wp-admin/admin-header.php
+++ b/wp-admin/admin-header.php
@@ -53,9 +53,8 @@ do_action('admin_print_scripts');
 do_action("admin_head-$hook_suffix");
 do_action('admin_head');
 
-if ( get_user_setting('mfold') == 'f' ) {
+if ( get_user_setting('mfold') == 'f' )
 	$admin_body_class .= ' folded';
-}
 
 if ( $is_iphone ) { ?>
 <style type="text/css">.row-actions{visibility:visible;}</style>
@@ -84,6 +83,7 @@ if ( '' == $blog_name ) {
 	if ( $blog_name != $blog_name_excerpt )
 		$blog_name_excerpt = trim($blog_name_excerpt) . '&hellip;';
 	$blog_name = $blog_name_excerpt;
+	unset($blog_name_excerpt);
 }
 $title_class = '';
 if ( function_exists('mb_strlen') ) {
@@ -110,6 +110,8 @@ if ( function_exists('mb_strlen') ) {
 
 <div id="wpbody">
 <?php
+unset($title_class, $blog_name);
+
 require(ABSPATH . 'wp-admin/menu-header.php');
 
 $current_screen->parent_file = $parent_file;
@@ -123,6 +125,5 @@ screen_meta($current_screen);
 
 do_action('admin_notices');
 
-if ( $parent_file == 'options-general.php' ) {
+if ( $parent_file == 'options-general.php' )
 	require(ABSPATH . 'wp-admin/options-head.php');
-}
diff --git a/wp-admin/admin.php b/wp-admin/admin.php
index d8b8b0008..4eaa5b117 100644
--- a/wp-admin/admin.php
+++ b/wp-admin/admin.php
@@ -42,7 +42,9 @@ if ( get_option('db_upgraded') ) {
 			require_once( ABSPATH . WPINC . '/http.php' );
 			$response = wp_remote_get( admin_url( 'upgrade.php?step=1' ), array( 'timeout' => 120, 'httpversion' => '1.1' ) );
 			do_action( 'after_mu_upgrade', $response );
+			unset($response);
 		}
+		unset($c);
 	}
 }
 
@@ -123,16 +125,16 @@ if ( isset($plugin_page) ) {
 
 		do_action($page_hook);
 	} else {
-		if ( validate_file($plugin_page) ) {
+		if ( validate_file($plugin_page) )
 			wp_die(__('Invalid plugin page'));
-		}
+
 
 		if ( !( file_exists(WP_PLUGIN_DIR . "/$plugin_page") && is_file(WP_PLUGIN_DIR . "/$plugin_page") ) && !( file_exists(WPMU_PLUGIN_DIR . "/$plugin_page") && is_file(WPMU_PLUGIN_DIR . "/$plugin_page") ) )
 			wp_die(sprintf(__('Cannot load %s.'), htmlentities($plugin_page)));
 
 		do_action('load-' . $plugin_page);
 
-		if (! isset($_GET['noheader']))
+		if ( !isset($_GET['noheader']))
 			require_once(ABSPATH . 'wp-admin/admin-header.php');
 
 		if ( file_exists(WPMU_PLUGIN_DIR . "/$plugin_page") )
@@ -156,12 +158,9 @@ if ( isset($plugin_page) ) {
 	}
 
 	// Allow plugins to define importers as well
-	if ( !isset($wp_importers) || !isset($wp_importers[$importer]) || ! is_callable($wp_importers[$importer][2]))
-	{
+	if ( !isset($wp_importers) || !isset($wp_importers[$importer]) || ! is_callable($wp_importers[$importer][2])) {
 		if (! file_exists(ABSPATH . "wp-admin/import/$importer.php"))
-		{
 			wp_die(__('Cannot load importer.'));
-		}
 		include(ABSPATH . "wp-admin/import/$importer.php");
 	}