I've discovered an issue with a cron service within Drupal. This affects the ability to search new content within the site using the "Search this site" feature. I've raised an issue with Drupal to try to get this resolved; the issue affects other Drupal users as well. Until a fix can be found the best solution for you is to use the site:www.mingw.org declarer in your favorite search engine.
You may notice the "Search this site:" be removed once in a while while I try to debug an issue.