I have a Django 1.5, Python 2.7 site running under Apache with mod_wsgi on a CentOS 6.4 server.
I have rebuilt this site using Django 1.6 and Python 3.3. Deploying
I had this problem recently:
ImproperlyConfigured: Error loading psycopg2 module: No module named _psycopg
... and this command was the answer:
sudo apt-get install libapache2-mod-wsgi-py3
Reference:
http://python.6.x6.nabble.com/ImproperlyConfigured-Error-loading-psycopg2-module-No-module-named-psycopg-td5044145.html