Ticket #10908: docs.patch

docs/topics/testing.txt

@@ -669 +669 @@
         user accounts that are valid on your production site will not work
         under test conditions. You'll need to create users as part of the test
         suite -- either manually (using the Django model API) or with a test
-        fixture.
+        fixture. Also remember that user password must be hashed either by
+        using ``set_password()`` or by creating users with 
+        ``User.objects.create_user``.
 
     .. method:: Client.logout()