diff -r b758351d191f -r cc9b7e14412b web/lib/django/core/serializers/base.py
--- a/web/lib/django/core/serializers/base.py	Wed May 19 17:43:59 2010 +0200
+++ b/web/lib/django/core/serializers/base.py	Tue May 25 02:43:45 2010 +0200
@@ -33,6 +33,7 @@
 
         self.stream = options.get("stream", StringIO())
         self.selected_fields = options.get("fields")
+        self.use_natural_keys = options.get("use_natural_keys", False)
 
         self.start_serialization()
         for obj in queryset:
@@ -152,15 +153,16 @@
         self.m2m_data = m2m_data
 
     def __repr__(self):
-        return "<DeserializedObject: %s>" % smart_str(self.object)
+        return "<DeserializedObject: %s.%s(pk=%s)>" % (
+            self.object._meta.app_label, self.object._meta.object_name, self.object.pk)
 
-    def save(self, save_m2m=True):
+    def save(self, save_m2m=True, using=None):
         # Call save on the Model baseclass directly. This bypasses any
         # model-defined save. The save is also forced to be raw.
         # This ensures that the data that is deserialized is literally
         # what came from the file, not post-processed by pre_save/save
         # methods.
-        models.Model.save_base(self.object, raw=True)
+        models.Model.save_base(self.object, using=using, raw=True)
         if self.m2m_data and save_m2m:
             for accessor_name, object_list in self.m2m_data.items():
                 setattr(self.object, accessor_name, object_list)