Wordpress MU Remote Call Removal Plugin

Hello,

After upgrading to 2.8.1 I found myself with a bug. Even after a successful upgrade I get the Upgrade Message. Now after a Support Inquiry, Dr.Mike adviced me to look for this plugin:

Wordpress MU remote call removal Plugin by Barry from Clearskys.net Blog: This plugin will stop the annoying habit of trying to call out to update servers by sneaking in on the init action and removes all of the actions set up to make remote calls before they are processed.

<?php
/*
Plugin Name: Remove WPMU remote calls
Plugin URI: http://blog.clearskys.net/
Description: This plugin removes all WordPress remote site calls.
Author: Barry at clearskys.net
Version: 0.1
Author URI: http://blog.clearskys.net/
*/

function wpmu_remove_remotes() {

remove_action( 'init', 'wp_version_check' );
remove_action( 'load-plugins.php', 'wp_update_plugins' );
remove_action( 'load-update.php', 'wp_update_plugins' );
remove_action( 'admin_init', '_maybe_update_plugins' );
remove_action( 'wp_update_plugins', 'wp_update_plugins' );

remove_action( 'admin_init', '_maybe_update_themes' );
remove_action( 'wp_update_themes', 'wp_update_themes' );

if ( wp_next_scheduled('wp_update_plugins')) {
wp_clear_scheduled_hook('wp_update_plugins');
}

if ( wp_next_scheduled('wp_update_themes') ) {
wp_clear_scheduled_hook('wp_update_themes');
}

}

add_action('init', 'wpmu_remove_remotes', 1);
?>

First reason I am posting this is because this is the second time I find myself with this bug. First on a Single WP and now on WPMu so I want to make sure this info is properly documented for further development.

Secondly I am having trouble enabling this plugin.

I ask the author and he said it worked for version 2.8.1 but every time I upload the file my site will not load. (Blank Pages without errors)

As far as I know for Mu Plugins all I have to do is upload. But I am having trouble here.

Help Please!!

Thanks

PS. Added the txt file just in case I am copy and pasting something wrong.