Index: network/menu.php
===================================================================
--- network/menu.php	(revision 15819)
+++ network/menu.php	(working copy)
@@ -9,7 +9,13 @@
 $menu[5] = array(__('Sites'), 'manage_sites', 'sites.php', '', 'menu-top menu-icon-site', 'menu-site', 'div');
 $menu[10] = array(__('Users'), 'manage_network_users', 'users.php', '', 'menu-top menu-icon-users', 'menu-users', 'div');
 $menu[15] = array(__('Themes'), 'manage_network_themes', 'themes.php', '', 'menu-top menu-icon-appearance', 'menu-appearance', 'div');
-$menu[20] = array(__('Plugins'), 'manage_network_plugins', 'plugins.php', '', 'menu-top menu-icon-plugins', 'menu-plugins', 'div');
+
+$plugin_update_count = 0;
+$update_plugins = get_site_transient( 'update_plugins' );
+if ( !empty($update_plugins->response) )
+	$plugin_update_count = count( $update_plugins->response );
+
+$menu[20] = array(sprintf( __('Plugins %s'), "<span class='update-plugins count-$plugin_update_count'><span class='plugin-count'>" . number_format_i18n($plugin_update_count) . "</span></span>" ), 'manage_network_plugins', 'plugins.php', '', 'menu-top menu-icon-plugins', 'menu-plugins', 'div');
 $menu[25] = array(__('Settings'), 'manage_network_options', 'settings.php', '', 'menu-top menu-icon-settings', 'menu-settings', 'div');
 $menu[30] = array(__('Update'), 'manage_network', 'upgrade.php', '', 'menu-top menu-icon-tools', 'menu-update', 'div');