When using the admin interface, things like this are printed to the console:
Not Found: /admin
Not Found: /admin_media/img/admin/nav-bg.gif
Not Found: /admin_media/img/admin/nav-bg.gif
Not Found: /admin_media/img/admin/nav-bg.gif
Not Found: /admin_media/img/admin/nav-bg.gif
When using the admin interface, things like this are printed to the console: