User permission methods not working

[Ruy Adono]

The User methods for checking for permissions are not working by default.

I've got them to work after following the instructions of a similar thread on StackOverflow:
http://stackoverflow.com/questions/2081061/django-user-get-all-permissions-is-empty-while-user-permissions-is-set

I don't really fully understand what's going on in this ModelBackend thing, but I got my application to work as expected by making django_openid_auth.auth.OpenIdBackend extends django.contrib.auth.backends.ModelBackend