Pagination repeating same posts

Hi,

I have a template set up to get the titles and dates from a specific category. I want it to show 5 posts per page, but when I set the “posts_per_page” value to 5 in query_posts() it paginates but the the next_post_link links to a page displaying the same 5 posts, not the older ones.

This might be something simple that I’m overlooking, but I cannot figure it out. Here’s an example of the template set-up:

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