Links for django-dirtyfields
django-dirtyfields-0.1.tar.gz
django_dirtyfields-0.1-py2.6.egg
0.1 home_page
http://docs.djangoproject.com/en/1.2/topics/signals/
http://stackoverflow.com/questions/110803/dirty-fields-in-django
http://docs.djangoproject.com/en/1.2/ref/signals/#django.db.models.signals.pre_save