NOTICE : to get this working i replaced
parts/svn-extras/django-calais/djangocalais/calaisapi.py ... around line 161

def construct_json_response(self, data):
	import cjson
	try:
	    intermediate_json = cjson.decode(data)
	except cjson.DecodeError:
	    print ">>> OpenCalais Error: %s" % data
	    return {}
	json_data = self._resolveReferences(intermediate_json)
	return self._createHierarchy(json_data)

-WITH-

def construct_json_response(self, data):
	from django.utils import simplejson
	try:
	    intermediate_json = simplejson.loads(data)
	except:
	    print ">>> OpenCalais Error: %s" % data
	    return {}
	json_data = self._resolveReferences(intermediate_json)
	return self._createHierarchy(json_data)