The module was always returning the first image. So if node 43 had 3 images, paths "/node_resource/43/image_field/0", "/node_resource/43/image_field/1", and "/node_resource/43/image_field/2" were all returning the same image! This has been fixed now.
The eighteenth maintenance and security release of the Drupal 5 series. Only fixes for security vulnerabilities and other bugs have been committed. New features are only being added to the forthcoming Drupal 7.0 release.
This release fixes security vulnerabilities. Sites are urged to upgrade immediately after reading the security announcement:
Ægir is a set of contributed modules for Drupal that aims to solve the problem of managing a large number of Drupal sites. It does this by providing you with a simple Drupal based hosting front end for your entire network of sites. To deploy a new site you simply have to create a new Site node. To backup or upgrade sites, you simply manage your site nodes as you would any other node.