load-only-non-existent-references.patch

Index: Doctrine/lib/Doctrine/Record.php
===================================================================
--- Doctrine.orig/lib/Doctrine/Record.php	2011-03-21 16:08:57.216144000 +0200
+++ Doctrine/lib/Doctrine/Record.php	2011-03-21 16:09:07.726144001 +0200
@@ -2361,8 +2361,11 @@
      */
     public function loadReference($name)
     {
-        $rel = $this->_table->getRelation($name);
-        $this->_references[$name] = $rel->fetchRelatedFor($this);
+        if (!isset($this->_references[$name]) || $this->_references[$name] === self::$_null)
+        {
+            $rel = $this->_table->getRelation($name);
+            $this->_references[$name] = $rel->fetchRelatedFor($this);
+        }
     }
 
     /**