Ticket #4994: common-middleware-fix.patch

django/middleware/common.py

@@ -80 +80 @@
             else:
                 etag = md5.new(response.content).hexdigest()
             if response.status_code >= 200 and response.status_code < 300 and request.META.get('HTTP_IF_NONE_MATCH') == etag:
+                oldCookies = response.cookies
                 response = http.HttpResponseNotModified()
+                response.cookies = oldCookies
             else:
                 response['ETag'] = etag