diff --git a/src/linux_cd_path.sh b/src/linux_cd_path.sh
old mode 100644
new mode 100755
diff --git a/src/linux_cp_files.sh b/src/linux_cp_files.sh
old mode 100644
new mode 100755
diff --git a/src/linux_cur_path.sh b/src/linux_cur_path.sh
old mode 100644
new mode 100755
diff --git a/src/network/qqttcpclient.cpp b/src/network/qqttcpclient.cpp
index eefae2de..cfb272d7 100644
--- a/src/network/qqttcpclient.cpp
+++ b/src/network/qqttcpclient.cpp
@@ -109,7 +109,8 @@ int QQtTcpClient::sendDisConnectFromHost()
         shutdown ( this->socketDescriptor(), SHUT_RDWR );
 #endif
         disconnectFromHost();
-        waitForDisconnected();
+        if ( state() != UnconnectedState )
+            waitForDisconnected();
         close();
         emit signalDisConnectSucc();
     }