I have always noticed our current solution that builds the RSS feed is not too sophisticated, but showing Dec 30 is definitely beyond what I had seen before going wrong.
Please try reloading the feed in 15-20 mins and let me know if nothing changes.
Now the current news work, the old ones (starting from "Dell crafts goal of going carbon neutral") are still from Dec 30. It's probably something to do with IE7's security settings, I'm not sure, but looks like the fixes did something.