--- C:/xampp/htdocs/wp-beta-3_3/wp-admin/includes/screen.php	Sun Oct 30 02:15:12 2011
+++ C:/xampp/htdocs/wordpress-3.3-beta2/wordpress/wp-admin/includes/screen.php	Mon Oct 31 01:31:22 2011
@@ -17,16 +17,16 @@
 function get_column_headers( $screen ) {
 	if ( is_string( $screen ) )
 		$screen = convert_to_screen( $screen );
 
 	static $column_headers = array();
 
 	if ( ! isset( $column_headers[ $screen->id ] ) )
-		$column_headers[ $screen->id ] = apply_filters( 'manage_' . $screen->id . '_columns', array() );
-	
+		$column_headers[ $screen->id ] = apply_filters( 'manage_' . $screen->id . '_columns' );
+
 	return $column_headers[ $screen->id ];
 }
 
 /**
  * Get a list of hidden columns.
  *
  * @since 2.7.0