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

Traceback (most recent call last):

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

  File "/usr/local/lib/python2.4/site-packages/django/core/handlers/modpython.py", line 228, in handler
    return ModPythonHandler()(req)

  File "/usr/local/lib/python2.4/site-packages/django/core/handlers/modpython.py", line 201, in __call__
    response = self.get_response(request)

  File "/usr/local/lib/python2.4/site-packages/django/core/handlers/base.py", line 67, in get_response
    response = middleware_method(request)

  File "/usr/local/lib/python2.4/site-packages/django/middleware/common.py", line 56, in process_request
    if (not _is_valid_path(request.path_info) and

  File "/usr/local/lib/python2.4/site-packages/django/middleware/common.py", line 142, in _is_valid_path
    urlresolvers.resolve(path)

  File "/usr/local/lib/python2.4/site-packages/django/core/urlresolvers.py", line 246, in resolve
    return get_resolver(urlconf).resolve(path)

  File "/usr/local/lib/python2.4/site-packages/django/core/urlresolvers.py", line 181, in resolve
    sub_match = pattern.resolve(new_path)

  File "/usr/local/lib/python2.4/site-packages/django/core/urlresolvers.py", line 179, in resolve
    for pattern in self.urlconf_module.urlpatterns:

  File "/usr/local/lib/python2.4/site-packages/django/core/urlresolvers.py", line 198, in _get_urlconf_module
    self._urlconf_module = __import__(self.urlconf_name, {}, {}, [''])

  File "/home/arno/django/qmm/urls.py", line 4, in ?
    admin.autodiscover()

  File "/usr/local/lib/python2.4/site-packages/django/contrib/admin/__init__.py", line 40, in autodiscover
    __import__("%s.admin" % app)

  File "/usr/local/lib/python2.4/site-packages/django/contrib/auth/admin.py", line 10, in ?
    from django.contrib.auth.forms import UserCreationForm, UserChangeForm, AdminPasswordChangeForm

  File "/usr/local/lib/python2.4/site-packages/django/contrib/auth/forms.py", line 10, in ?
    class UserCreationForm(forms.ModelForm):

  File "/usr/local/lib/python2.4/site-packages/django/contrib/auth/forms.py", line 16, in UserCreationForm
    error_message = _("This value must contain only letters, numbers and underscores."))

  File "/usr/local/lib/python2.4/site-packages/django/forms/fields.py", line 400, in __init__
    if error_message:

  File "/usr/local/lib/python2.4/site-packages/django/utils/functional.py", line 188, in __wrapper__
    res = self.__func(*self.__args, **self.__kw)

  File "/usr/local/lib/python2.4/site-packages/django/utils/translation/__init__.py", line 62, in ugettext
    return real_ugettext(message)

  File "/usr/local/lib/python2.4/site-packages/django/utils/translation/trans_real.py", line 290, in ugettext
    return do_translate(message, 'ugettext')

  File "/usr/local/lib/python2.4/site-packages/django/utils/translation/trans_real.py", line 280, in do_translate
    _default = translation(settings.LANGUAGE_CODE)

  File "/usr/local/lib/python2.4/site-packages/django/utils/translation/trans_real.py", line 198, in translation
    default_translation = _fetch(settings.LANGUAGE_CODE)

  File "/usr/local/lib/python2.4/site-packages/django/utils/translation/trans_real.py", line 181, in _fetch
    app = getattr(__import__(appname[:p], {}, {}, [appname[p+1:]]), appname[p+1:])

  File "/home/arno/django/qmm/../qmm/nav/__init__.py", line 8, in ?
    rootmenu = NavMenu.objects.get(name='root')

  File "/usr/local/lib/python2.4/site-packages/django/db/models/manager.py", line 93, in get
    return self.get_query_set().get(*args, **kwargs)

  File "/usr/local/lib/python2.4/site-packages/django/db/models/query.py", line 304, in get
    num = len(clone)

  File "/usr/local/lib/python2.4/site-packages/django/db/models/query.py", line 160, in __len__
    self._result_cache = list(self.iterator())

  File "/usr/local/lib/python2.4/site-packages/django/db/models/query.py", line 275, in iterator
    for row in self.query.results_iter():

  File "/usr/local/lib/python2.4/site-packages/django/db/models/sql/query.py", line 206, in results_iter
    for rows in self.execute_sql(MULTI):

  File "/usr/local/lib/python2.4/site-packages/django/db/models/sql/query.py", line 1723, in execute_sql
    cursor = self.connection.cursor()

  File "/usr/local/lib/python2.4/site-packages/django/db/backends/__init__.py", line 56, in cursor
    cursor = self._cursor(settings)

  File "/usr/local/lib/python2.4/site-packages/django/db/backends/postgresql_psycopg2/base.py", line 84, in _cursor
    self.connection = Database.connect(conn_string, **self.options)

OperationalError: FATAL:  could not access status of transaction 0
DETAIL:  could not write to file "pg_subtrans/017B" at offset 98304: Disk quota exceeded