Index: modules/taxonomy/taxonomy.module
===================================================================
--- modules/taxonomy/taxonomy.module	(revision 53)
+++ modules/taxonomy/taxonomy.module	(working copy)
@@ -826,7 +826,7 @@
 
   // We cache trees, so it's not CPU-intensive to call get_tree() on a term
   // and its children, too.
-  if (!isset($children[$vid])) {
+  if (!isset($children[$vid]) || !taxonomy_get_enable_tree_cache()) {
     $children[$vid] = array();
 
     $result = db_query(db_rewrite_sql('SELECT t.tid, t.*, parent FROM {term_data} t INNER JOIN {term_hierarchy} h ON t.tid = h.tid WHERE t.vid = %d ORDER BY weight, name', 't', 'tid'), $vid);
@@ -859,6 +859,20 @@
   return $tree;
 }
 
+function taxonomy_get_enable_tree_cache() {
+	return taxonomy_set_enable_tree_cache();
+}
+	
+function taxonomy_set_enable_tree_cache($enabled = NULL) {
+	static $cache_enabled = TRUE;
+	
+	if (!is_null($enabled)) {
+		$cache_enabled = $enabled;
+	}
+	
+	return $cache_enabled;
+}
+
 /**
  * Return an array of synonyms of the given term ID.
  */