diff --git a/service/main.lua b/service/main.lua
index b3367e90..ce1e4caa 100644
--- a/service/main.lua
+++ b/service/main.lua
@@ -2,7 +2,6 @@ local skynet = require "skynet"
 
 skynet.start(function()
 	print("Server start")
-	local launcher = skynet.launch("snlua","launcher")
 	local connection = skynet.launch("connection","256")
 	local lualog = skynet.launch("snlua","lualog")
 	local console = skynet.launch("snlua","console")
@@ -12,7 +11,7 @@ skynet.start(function()
 	local watchdog = skynet.launch("snlua","watchdog","8888 4 0")
 	local db = skynet.launch("snlua","simpledb")
 	local redis = skynet.launch("snlua","redis-mgr")
---	skynet.launch("snlua","testgroup")
+	skynet.launch("snlua","testgroup")
 
 	skynet.exit()
 end)
diff --git a/skynet-src/skynet_handle.c b/skynet-src/skynet_handle.c
index d1ecc125..fd6e4a5a 100644
--- a/skynet-src/skynet_handle.c
+++ b/skynet-src/skynet_handle.c
@@ -72,10 +72,10 @@ skynet_handle_retire(uint32_t handle) {
 
 	uint32_t hash = handle & (s->slot_size-1);
 	struct skynet_context * ctx = s->slot[hash];
+
 	if (skynet_context_handle(ctx) == handle) {
 		skynet_context_release(ctx);
 		s->slot[hash] = NULL;
-
 		int i;
 		int j=0, n=s->name_count;
 		for (i=0; i<n; ++i) {
diff --git a/skynet-src/skynet_mq.c b/skynet-src/skynet_mq.c
index 569e8614..e45e154b 100644
--- a/skynet-src/skynet_mq.c
+++ b/skynet-src/skynet_mq.c
@@ -211,12 +211,12 @@ skynet_mq_release(struct message_queue *q) {
 	LOCK(q)
 	
 	if (q->release) {
+		UNLOCK(q)
 		ret = _drop_queue(q);
 	} else {
 		skynet_mq_force_push(q);
+		UNLOCK(q)
 	}
 	
-	UNLOCK(q)
-
 	return ret;
 }
diff --git a/skynet-src/skynet_start.c b/skynet-src/skynet_start.c
index a865355f..bad00b38 100644
--- a/skynet-src/skynet_start.c
+++ b/skynet-src/skynet_start.c
@@ -10,6 +10,7 @@
 #include <pthread.h>
 #include <unistd.h>
 #include <assert.h>
+#include <stdio.h>
 
 static void *
 _timer(void *p) {
@@ -25,7 +26,7 @@ _worker(void *p) {
 	for (;;) {
 		if (skynet_context_message_dispatch()) {
 			usleep(1000);
-		}
+		} 
 	}
 	return NULL;
 }
@@ -37,6 +38,7 @@ _start(int thread) {
 	pthread_create(&pid[0], NULL, _timer, NULL);
 
 	int i;
+
 	for (i=1;i<thread+1;i++) {
 		pthread_create(&pid[i], NULL, _worker, NULL);
 	}
@@ -70,6 +72,7 @@ skynet_start(struct skynet_config * config) {
 	}
 	// harbor must be init first
 	if (skynet_harbor_start(config->master , config->local)) {
+		fprintf(stderr, "Init fail : no master");
 		return;
 	}
 
@@ -78,6 +81,8 @@ skynet_start(struct skynet_config * config) {
 	if (ctx == NULL) {
 		return;
 	}
+	ctx = skynet_context_new("snlua", "launcher");
+	assert(ctx);
 	ctx = skynet_context_new("snlua", config->start);
 
 	_start(config->thread);