Is there a why to keep the grided guide populated? Sometimes if I keep it on a channel for a long time and go back out to the guide and start browsing through to find something else to watch I have to stop and wait a while browsing for the guide to populate and make my way up doing this. Is there anything I can turn on to keep the guide updated? Something to keep it polling for new data. I only use my small fav group of channels so i thought that would help but it doesn't.