--- advpoll.module	2009-05-30 19:16:40.000000000 +0200
+++ advpoll.module	2009-11-11 17:46:33.000000000 +0200
@@ -1171,6 +1176,11 @@ function _advpoll_insert_choices($nid) {
   $node = node_load($nid);
   $weight = 0;
   $seen_ids = array();
+  
+  //if nothing has been posted (i.e. through unpublishing an advanced poll from admin/content/node/overview ) then return, otherwise advpoll will delete
+  //ALL poll choices! http://drupal.org/node/468394
+  if (!$_POST['choice']) return;
+  
   foreach ($_POST['choice'] as $index => $choice) {
     if ($choice['label'] != '') {
       // Mark this choice id as being seen.