diff -uNrp zabbix-1.8.4.orig/frontends/php/api/classes/class.cmap.php zabbix-1.8.4/frontends/php/api/classes/class.cmap.php
--- zabbix-1.8.4.orig/frontends/php/api/classes/class.cmap.php	2011-03-16 14:28:23.000000000 +0900
+++ zabbix-1.8.4/frontends/php/api/classes/class.cmap.php	2011-03-18 14:23:30.000000000 +0900
@@ -584,7 +584,6 @@ COpt::memoryPick();
 				$sysmapid = next($sysmapids);
 			}
 
-			self::addElements($data_elements);
 			self::EndTransaction(true, __METHOD__);
 
 			return array('sysmapids' => $sysmapids);