Further on... this is dummy code I'm testing trying to figure out what's wrong:

        private static void ExecWhenUnpublished(IPublishedContent node)
    {

        // write only visible nodes
        bool published = node.IsPublished();    //always true
        bool drafted = node.IsDraft();          //always false even if node is Draft
        bool visible = node.IsVisible();        //always true even if node is Draft

        if (published && drafted == false && visible)
        {
               // whatever
            }
        }
    }

        public class SubscribeToUnpublishedEventComponent : IComponent
    {
        /// <summary>
        /// Initialize: runs once when Umbraco starts
        /// </summary>
        public void Initialize()
        {
            ContentService.Unpublished += ContentService_Unpublished;
        }


        /// <summary>
        /// Terminate: runs once when Umbraco stops
        /// </summary>
        public void Terminate()
        {
            ContentService.Unpublished -= ContentService_Unpublished;
        }

        /// <summary>
        /// Write sitemap.xml in Media\_sitemap
        /// </summary>
        /// <param name="sender"></param>
        /// <param name="e"></param>
        private void ContentService_Unpublished(IContentService sender, PublishEventArgs<IContent> e)
        {
            // whatever

        }

    }

Any help areciated

is working on a reply...