I am having an issue with my RSS feed. The content formatting within the <guid> enclosures seems to have changed. Before I would get something like this in my RSS feed:
Now I get these guid entries instead:
Old posts still work the proper way in the RSS feed, but new entries have guid tags that are filled with numbers. These numbers seems to sporadically change as well and then feed readers download the articles all over again. In the case of my podcast posts it is causing iTunes to download the MP3 file over and over again.
Why did this shift happen, and is there any way that I can revert it to the old behavior?