This plugin is outdated and might not be supported anymore
Just One Category

Just One Category

Details
View on WordPress

Just One Category will cause WordPress to display on a category archive page
only those posts which are direct members of that category, i.e. this plugin
will exclude from that category page all posts which belong to any of that
category’s subcategories but do not belong to the category itself.

Details

Plugin code:
just-one-category
Plugin version:
1.1
Outdated:
Yes
WP version:
2.3 or higher
PHP version:
or higher
Test up to WP version:
3.0.5
Total installations:
20
Last updated:
2010-03-07
Rating:
Times rated:
0
archive
category
exclude