=== modified file 'init/control.c'
--- init/control.c	2013-04-22 10:30:09 +0000
+++ init/control.c	2013-10-16 10:30:56 +0000
@@ -1136,6 +1136,16 @@
 		NihListEntry   *entry = (NihListEntry *)iter;
 		DBusConnection *conn = (DBusConnection *)entry->data;
 
+        if ( dbus_connection_has_messages_to_send (conn)) {
+            /* The client is not responding to messages we are sending to it.
+             * This could be due to it not registering a mainloop
+             * handler (which is a bug), but either way we must ignore
+             * this connection to avoid libdbus caching the messages
+             * forever and potentially consuming all memory.
+             */
+            continue;
+        }
+
 		NIH_ZERO (control_emit_event_emitted (conn, DBUS_PATH_UPSTART,
 							    event->name, event->env));
 	}