Index: taxonomy_super_select.module
===================================================================
RCS file: /cvs/drupal-contrib/contributions/modules/taxonomy_super_select/taxonomy_super_select.module,v
retrieving revision 1.10.2.1
diff -u -p -r1.10.2.1 taxonomy_super_select.module
--- taxonomy_super_select.module	21 Jan 2009 22:44:21 -0000	1.10.2.1
+++ taxonomy_super_select.module	29 Jul 2009 16:12:02 -0000
@@ -86,6 +86,7 @@ function taxonomy_super_select_form_alte
           unset($form['taxonomy'][$vid]);
         }
       }
+      $form['#validate'][] = 'taxonomy_super_select_node_form_validate';
     }
     
     // Go through each enabled vocab and create taxonomy super select
@@ -307,6 +308,29 @@ function taxonomy_super_select_nodeapi(&
   }
 }
 
+/**
+ * Validate node_form submissions. 
+ * Remove taxonomy terms with a value of zero
+ */
+function taxonomy_super_select_node_form_validate($form, &$form_state) {
+  $taxonomy = $form_state['values']['taxonomy'];
+  if (is_array($taxonomy)) {
+    $form_state['values']['taxonomy'] = _tss_filter_recursive($taxonomy);
+  }
+}
+
+/**
+ * Recursively apply array_filter() to an array.
+ */
+function _tss_filter_recursive($input) {
+  foreach ($input as &$value) {
+    if (is_array($value)) {
+      $value = _tss_filter_recursive($value);
+    }
+  }
+  return array_filter($input); 
+}
+
 function taxonomy_super_select_submit(&$form, $form_state) {
   $vid = $form['vid']['#value'];
   if (count($form['settings']['tss']['taxonomy_super_select_vid_'. $vid])) {