The RSS feed reader in OS 2007 tends to crash whenever it encounters a feed it can't handle which is a reflection of the poor code quality being shipped by Nokia (obviously it should just ignore the dodgey feed or log a warning to the user).

Chances are you have a feed in your list which is causing the feed reader applet to crash when it auto-updates - it processes The Guardian OK, but then bombs out on one of your remaining feeds.

See if you can go into the main RSS feed application and refresh each feed in turn to see if any of them cause the application to crash.