Last week, a security update was released for the filefield module for Drupal 6. Today, we have rolled this update out across all of our Drupal 6 sites to make sure they are up-to-date. The security issue was very minor and we did not believe it posed a significant risk to any of our customers, but the update will ensure that security remains tight.
The update does not add any new functionality and you will not notice any difference when you are using your Drupal site from day to day.
If you would like to know if your site is affected or more about what implications this has, please get in touch using the contact form or the details at the bottom of the site.