Version: 3.6 Independently control the number of posts listed on the front page, author/category/tag archives, search results, etc.
/wp-content/plugins/directory (or install via the built-in WordPress plugin installer)
Settingslink next to its
Deactivatelink (still on the Plugins page), or click on the
Post Limitslink, to go to the plugin's admin settings page. Optionally customize the limits.