I have two categories that both have the name "anger management" but they have different url slugs: one is "anger-management" and the other is "anger-management-videos". But when I click on the "anger- management-videos", it takes me to the right url (http://angerwise.com/category/anger-management-videos/), but it displays the page for the "anger-management" category.
Check http://angerwise.com to see this in action.