Possible patch to address https://code.djangoproject.com/ticket/16855

gistfile1.diff

--- db/models/sql/query_org.py  2012-04-29 12:06:48.798119638 +0200
+++ db/models/sql/query.py      2012-04-29 12:04:20.155210307 +0200
@@ -1753,7 +1753,12 @@
         certain related models (as opposed to all models, when
         self.select_related=True).
         """
-        field_dict = {}
+        if self.select_related is False:
+            field_dict = {}
+        else:
+            field_dict = self.select_related
         for field in fields:
             d = field_dict
             for part in field.split(LOOKUP_SEP):