Index: post.php
===================================================================
--- post.php	(revision 14336)
+++ post.php	(working copy)
@@ -156,6 +156,9 @@
 	}
 
 	$post_data = _wp_translate_postdata( true, $post_data );
+	if ( 'autosave' != $post_data['action']  && 'auto-draft' == $post_data['post_status'] ) {
+		$post_data['post_status'] = 'draft';
+	}
 	if ( is_wp_error($post_data) )
 		wp_die( $post_data->get_error_message() );