diff -r 59a8feebec2c -r 0e6fadf81a2c QTfrontend/util/frontlibpoller.cpp
--- a/QTfrontend/util/frontlibpoller.cpp	Sat Nov 24 00:07:05 2012 +0400
+++ b/QTfrontend/util/frontlibpoller.cpp	Sun Nov 25 01:13:51 2012 +0400
@@ -8,7 +8,8 @@
     m_poll = poll;
     m_data = data;
 
-    m_timer.start(50, this);
+    if(m_data)
+        m_timer.start(50, this);
 }
 
 void FrontLibPoller::timerEvent(QTimerEvent *event)