Disable Wordpress Core, Plugins, and Themes Update

disable_update

<?php
//Disable Theme Updates
# 2.8 to 3.0:
remove_action( 'load-themes.php', 'wp_update_themes' );
remove_action( 'load-update.php', 'wp_update_themes' );
remove_action( 'admin_init', '_maybe_update_themes' );
remove_action( 'wp_update_themes', 'wp_update_themes' );
add_filter( 'pre_transient_update_themes', create_function( '$a', "return null;" ) );
wp_clear_scheduled_hook( 'wp_update_themes' );

# 3.0:
remove_action( 'load-update-core.php', 'wp_update_themes' );
add_filter( 'pre_site_transient_update_themes', create_function( '$a', "return null;" ) );
wp_clear_scheduled_hook( 'wp_update_themes' );


//Disable Plugin Updates
# 2.8 to 3.0:
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' );
add_filter( 'pre_transient_update_plugins', create_function( '$a', "return null;" ) );
wp_clear_scheduled_hook( 'wp_update_plugins' );

# 3.0:
remove_action( 'load-update-core.php', 'wp_update_plugins' );
add_filter( 'pre_site_transient_update_plugins', create_function( '$a', "return null;" ) );
wp_clear_scheduled_hook( 'wp_update_plugins' );


//Diasable Core Updates
# 2.8 to 3.0:
remove_action( 'wp_version_check', 'wp_version_check' );
remove_action( 'admin_init', '_maybe_update_core' );
add_filter( 'pre_transient_update_core', create_function( '$a', "return null;" ) );
wp_clear_scheduled_hook( 'wp_version_check' );

# 3.0:
add_filter( 'pre_site_transient_update_core', create_function( '$a', "return null;" ) );
wp_clear_scheduled_hook( 'wp_version_check' );
?>