Corrigo urls.py para funcionar com Django 1.0.

sigi/urls.py

@@ -1,9 +1,8 @@
 from django.conf.urls.defaults import *
+from django.contrib import admin
 
-urlpatterns = patterns('',
-    # Example:
-    # (r'^sigi/', include('sigi.casas.urls')),
+admin.autodiscover()
 
-    # Uncomment this for admin:
-    (r'^admin/', include('django.contrib.admin.urls')),
+urlpatterns = patterns('',
+    (r'^admin/(.*)', admin.site.root),
 )