I'm trying to troubleshoot a problem I'm having with the delicious cached++ plugin. The plugin uses the MagpieRSS functions that are built into WordPress, but it's not clear to me that Magpie is caching the feed information that it's pulling from del.icio.us.
Is there some way that I can conclusively determine whether or not Magpie is caching feed data? I've looked in the /wp-content/cache directory and can't see anything with "rss_" prepended.
Currently the plugin returns data only periodically. Frequently the sidebar where the links are supposed to be is empty -- indicating no data. My understanding is that Magpie should use cached data if it can't connect to the source feed.