--- zabbix-1.8.10~/frontends/php/include/classes/class.cchart.php	2012-02-13 09:59:43.334297878 +0400
+++ zabbix-1.8.10/frontends/php/include/classes/class.cchart.php	2012-02-13 10:00:48.450294404 +0400
@@ -2144,7 +2144,8 @@
 				if(($draw == false) && ($this->items[$item]['calc_type'] == GRAPH_ITEM_AGGREGATED))
 					$draw = $i - $j < 5;
 
-				if($this->items[$item]['type'] == ITEM_TYPE_TRAPPER) $draw = true;
+//				if($this->items[$item]['type'] == ITEM_TYPE_TRAPPER) $draw = true;
+                                if($this->items[$item]['type'] == ITEM_TYPE_TRAPPER && $diff <= 7200) $draw = true;
 
 				if(!$draw && !$prevDraw){
 					$draw = true;