Front page asks for admin login?

Hello,

my site hartlyfamily.org is running fine, but with one issue – whenever anyone comes to the front page, it asks for the admin user name and password, saying that it is a restricted area. If I click cancel, the site loads fine and works like normal. But obviously, I want to make this go away. My site is completely public and I have no special plugins that would make this happen… can anyone tell me what’s going on and how to fix it?

Thanks