I have set up my blog page with access to my strangers group, but they can't see it...

I've set up a page for blog entries, and it must be publicly available, as I'm only restricting access to the submit blog entry page.

I've set up a Level called Public, set that as the Strangers group in Options, and all the posts are in the same category. I've also set this group up to have access to the blog page, & the category the posts belong to, yet when a non-logged in user tries to access the blog page, they are shown the Protected Content Page instead.

Am I missing something?

I'm sure this was working at one point, but it seems not any more.