Interesting that the session middleware was the culprit. BTW, why did you put it at the end of your middleware list?
The default order is:
"django.middleware.sessions.SessionMiddleware",
"django.middleware.common.CommonMiddleware",
"django.middleware.doc.XViewMiddleware",
(see
http://www.djangoproject.com/documentation/settings/#middleware-classes).
Thanks,
Eugene
