bbPress.org

WordPress uses Magpie for doing RSS and by default will cache the feeds for 1 hour. To change this, you can add a line to your wp-config file like:

define(‘MAGPIE_CACHE_AGE’, TIME);

Replace the word ‘TIME’ with the length of time in seconds to cache. You can also turn off the Magpie cache with:

define(‘MAGPIE_CACHE_ON’, false);

Hope that helps.