The News aggregator only updates if cron jobs are being run.
There doesn't seem to be a way of doing this via the Control Panel for this site so I have set up an account on http://www.webcron.org/index.php
This will visit cron.php every hour.
Voila - news gets updated!

Tue, 2007-05-01 12:17
this also applies to the Drupal Search module...