Error if a non-existing page is accessed

[sema]

If you access a non-existing page you get a 500 error page and not the expected 404 page.

Traceback (most recent call last):

File "/home/vukitadk/.virtualenvs/galleri-production/lib/python2.5/site-packages/Django-1.2.3-py2.5.egg/django/core/handlers/base.py", line 127, in get_response
return callback(request, **param_dict)

File "/home/vukitadk/.virtualenvs/galleri-production/lib/python2.5/site-packages/Django-1.2.3-py2.5.egg/django/views/defaults.py", line 14, in page_not_found
return http.HttpResponseNotFound(t.render(RequestContext(request, {'request_path': request.path})))

File "/home/vukitadk/.virtualenvs/galleri-production/lib/python2.5/site-packages/Django-1.2.3-py2.5.egg/django/template/init.py", line 173, in render
return self._render(context)

File "/home/vukitadk/.virtualenvs/galleri-production/lib/python2.5/site-packages/Django-1.2.3-py2.5.egg/django/template/init.py", line 167, in _render
return self.nodelist.render(context)

File "/home/vukitadk/.virtualenvs/galleri-production/lib/python2.5/site-packages/Django-1.2.3-py2.5.egg/django/template/init.py", line 796, in render
bits.append(self.render_node(node, context))

File "/home/vukitadk/.virtualenvs/galleri-production/lib/python2.5/site-packages/Django-1.2.3-py2.5.egg/django/template/init.py", line 809, in render_node
return node.render(context)

File "/home/vukitadk/.virtualenvs/galleri-production/lib/python2.5/site-packages/Django-1.2.3-py2.5.egg/django/template/loader_tags.py", line 103, in render
compiled_parent = self.get_parent(context)

File "/home/vukitadk/.virtualenvs/galleri-production/lib/python2.5/site-packages/Django-1.2.3-py2.5.egg/django/template/loader_tags.py", line 100, in get_parent
return get_template(parent)

File "/home/vukitadk/.virtualenvs/galleri-production/lib/python2.5/site-packages/Django-1.2.3-py2.5.egg/django/template/loader.py", line 157, in get_template
template, origin = find_template(template_name)

File "/home/vukitadk/.virtualenvs/galleri-production/lib/python2.5/site-packages/Django-1.2.3-py2.5.egg/django/template/loader.py", line 138, in find_template
raise TemplateDoesNotExist(name)

TemplateDoesNotExist: site.html