After initializing a newsfeed, a user may leave and return (or refresh) expecting to see updated information from the feed. The NewsService is designed to cache channels for 10 minutes. If the user attempts a refresh within 10 minutes or if another user attempts to view the same channel within 10 minutes, the cached version should be used. If the cached version has expired, it will be retrieved again.
The problem is that sometimes a null channel is returned. This shows up as a blank page in the news tool. Seems to occur when the cached item is expiring.