*** hs_taxonomy.module	Tue Sep 29 17:13:46 2009
--- hs_taxonomy.mod.module	Wed Oct 14 19:46:37 2009
@@ -302,6 +302,15 @@
       $form['taxonomy']['#tree'] = TRUE;
     }
   }
+
+  // content_taxonomy-module automatically hides the taxonomy fields that
+  // were added as CCK-fields. If the HS integration with it is enabled 
+  // (hs_content_taxonomy-module), this "hs_taxonomy" module is also required. 
+  // We need to make sure that the taxonomy fields won't be shown twice.
+  if(module_exists('hs_content_taxonomy')){
+	content_taxonomy_form_alter($form, $form_state, $form_id);
+  }
+  
 }