Index: wp-includes/link-template.php
===================================================================
--- wp-includes/link-template.php	(revision 15549)
+++ wp-includes/link-template.php	(working copy)
@@ -1147,7 +1147,7 @@
 /**
  * Retrieve boundary post.
  *
- * Boundary being either the first or last post by publish date within the contraitns specified
+ * Boundary being either the first or last post by publish date within the constraints specified
  * by in same category or excluded categories.
  *
  * @since 2.8.0
@@ -1187,7 +1187,7 @@
 
 	$order = $start ? 'ASC' : 'DESC';
 
-	return get_posts( array('numberposts' => 1, 'no_found_rows' => true, 'order' => $order, 'orderby' => 'ID', 'category' => $categories) );
+	return get_posts( array('numberposts' => 1) );
 }
 
 /**