--- ./scripts/ss_host_disk.php	2008-10-05 18:19:17.656634044 +0300
+++ ./scripts/ss_host_disk.php	2008-10-07 11:07:10.120905407 +0300
@@ -65,7 +65,14 @@
 		$arg = $arg1;
 
 		$arr_index = ss_host_disk_reindex(cacti_snmp_walk($hostname, $snmp_community, $oids["index"], $snmp_version, $snmp_auth_username, $snmp_auth_password, $snmp_auth_protocol, $snmp_priv_passphrase, $snmp_priv_protocol, $snmp_context, $snmp_port, $snmp_timeout, read_config_option("snmp_retries"), SNMP_POLLER));
+		if (empty($arr_index)) {
+			return;
+		}
 		$arr = ss_host_disk_reindex(cacti_snmp_walk($hostname, $snmp_community, $oids[$arg], $snmp_version, $snmp_auth_username, $snmp_auth_password, $snmp_auth_protocol, $snmp_priv_passphrase, $snmp_priv_protocol, $snmp_context, $snmp_port, $snmp_timeout, read_config_option("snmp_retries"), SNMP_POLLER));
+		if (empty($arr)) {
+			// we likely already got error already earlier, like "Timeout: No Response from localhost:161"
+			return;
+		}
 
 		for ($i=0;($i<sizeof($arr_index));$i++) {
 			print $arr_index[$i] . "!" . $arr[$i] . "\n";