The Server Fault blog RSS feed always comes up twice in Google reader (with different timestamps)...The stackoverflow blog rss doesn't do this...anyone else have this problem?

From my screenshot, this began happening on the 9th of december...My first guess is that this is just google reader being weird...

This is the feed url from google reader: http://blog.serverfault.com/rss

The Server Fault blog RSS feed always comes up twice in Google reader (with different timestamps)...The stackoverflow blog rss doesn't do this...anyone else have this problem?

From my screenshot, this began happening on the 9th of december...My first guess is that this is just google reader being weird...

This is the feed url from google reader: http://blog.serverfault.com/rss

Edit following Zoredache's answer
Showing that the body is different...