Mod_python error: "PythonHandler django.core.handlers.modpython"

Traceback (most recent call last):

  File "/usr/local/lib/python2.4/site-packages/mod_python/apache.py", line 299, in HandlerDispatch
    result = object(req)

  File "/www/django-sites/itpp/itpp/django/core/handlers/modpython.py", line 228, in handler
    return ModPythonHandler()(req)

  File "/www/django-sites/itpp/itpp/django/core/handlers/modpython.py", line 201, in __call__
    response = self.get_response(request)

  File "/www/django-sites/itpp/itpp/django/core/handlers/base.py", line 128, in get_response
    return self.handle_uncaught_exception(request, resolver, exc_info)

  File "/www/django-sites/itpp/itpp/django/core/handlers/base.py", line 160, in handle_uncaught_exception
    return callback(request, **param_dict)

  File "/www/django-sites/itpp/itpp/tools/misc.py", line 128, in e500
    return static.show(request, '500')

  File "/www/django-sites/itpp/itpp/../itpp/pages/views.py", line 10, in show
    at = vt.at(request, places.static)

  File "/www/django-sites/itpp/itpp/tools/views.py", line 28, in at
    current_site = Site.current(request)

  File "/www/django-sites/itpp/itpp/../itpp/portal/site.py", line 36, in current
    return Site.objects.get(domain=host)

  File "/www/django-sites/itpp/itpp/django/db/models/manager.py", line 93, in get
    return self.get_query_set().get(*args, **kwargs)

  File "/www/django-sites/itpp/itpp/django/db/models/query.py", line 304, in get
    num = len(clone)

  File "/www/django-sites/itpp/itpp/django/db/models/query.py", line 160, in __len__
    self._result_cache = list(self.iterator())

  File "/www/django-sites/itpp/itpp/django/db/models/query.py", line 275, in iterator
    for row in self.query.results_iter():

  File "/www/django-sites/itpp/itpp/django/db/models/sql/query.py", line 206, in results_iter
    for rows in self.execute_sql(MULTI):

  File "/www/django-sites/itpp/itpp/django/db/models/sql/query.py", line 1733, in execute_sql
    cursor = self.connection.cursor()

  File "/www/django-sites/itpp/itpp/django/db/backends/__init__.py", line 56, in cursor
    cursor = self._cursor(settings)

  File "/www/django-sites/itpp/itpp/django/db/backends/postgresql_psycopg2/base.py", line 84, in _cursor
    self.connection = Database.connect(conn_string, **self.options)

OperationalError: could not connect to server: No such file or directory
	Is the server running locally and accepting
	connections on Unix domain socket "/tmp/.s.PGSQL.5432"?