diff -ur nagios-2.2/base/checks.c nagios-2.2.new/base/checks.c
--- nagios-2.2/base/checks.c	2006-02-16 04:47:55.000000000 +0000
+++ nagios-2.2.new/base/checks.c	2006-05-16 14:58:54.063374901 +0100
@@ -1100,7 +1100,10 @@
 			
 			/* check the route to the host if its supposed to be up right now... */
 			if(temp_host->current_state==HOST_UP){
-				route_result=verify_route_to_host(temp_host,CHECK_OPTION_NONE);
+				/* Only check the host if the service that failed is an active check 
+				   We assume that the host that has received a passive check is okay */
+				if (temp_service->check_type == SERVICE_CHECK_ACTIVE)
+					route_result=verify_route_to_host(temp_host,CHECK_OPTION_NONE);
 #ifdef DEBUG_CHECKS
 				printf("\tSECTION B1\n");
 #endif