I'm looking after a site where someone has configured /%category%/%postname% as the Permalink structure.
A side-effect of this seems to be that a category archive will appear both at the usual /category/foo and also /foo.
One downside of this is that it creates a duplicate page. Another is that any "Older posts" link on that second page won't work, since it will point to /foo/page/2 which will return a 404.
Is there any way to disable the /foo version of the page without changing the Permalink structure?