Not sure if this is a bug or not.
But I created a category (called C say) with a sub category (S).
Then I created 4 test posts all with "All comments enabled". These posts are assigned to the categories C and S.
No when I view the post, then click on the Comments link, it should come up with a form to enter a comment, instead it displays
"Sorry, no posts matched your criteria."
I also wanted a page where I could list the posts within the sub category S only.
I searched the forums and found the sort of code that could work but try as I might, it fails to work. Has anyone got some code that would function. To me it seems a problem related to not being able query the database for the sub category for whatever reason.