Index: wp-includes/update.php
===================================================================
--- wp-includes/update.php	(revision 22236)
+++ wp-includes/update.php	(working copy)
@@ -144,6 +144,12 @@
 		require_once( ABSPATH . 'wp-admin/includes/plugin.php' );
 
 	$plugins = get_plugins();
+
+	// Pass only essential information to the API (save bandwidth)
+	foreach ( $plugins as $plugin_path => $plugin_data ) {
+		$plugins[ $plugin_path ] = array( 'Version' => $plugin_data[ 'Version' ] );
+	}
+
 	$active  = get_option( 'active_plugins', array() );
 	$current = get_site_transient( 'update_plugins' );
 	if ( ! is_object($current) )