Lost navigation

I've fallen for this with every drupal set up: disable the navigation and find yourself unable to login.

Here's how you can still administer your site:

First to login visit:
http://www.wrwrwr.org/?=user

And then access the administration panel like that:
http://www.wrwrwr.org/?=admin

For drupal installed in a directory use the full path. If you've already enabled clean URLs you may have to omit the '?=' part of the addresses.

After that consider setting the navigation as visible only for certain roles, like the authenticated user. You can do that through the Site building→Blocks menu.