Index: qtbase-opensource-src-5.4.1+dfsg/src/plugins/bearer/networkmanager/qnetworkmanagerservice.cpp
===================================================================
--- qtbase-opensource-src-5.4.1+dfsg.orig/src/plugins/bearer/networkmanager/qnetworkmanagerservice.cpp
+++ qtbase-opensource-src-5.4.1+dfsg/src/plugins/bearer/networkmanager/qnetworkmanagerservice.cpp
@@ -261,6 +261,11 @@ QNetworkManagerInterfaceAccessPoint::QNe
 
 QNetworkManagerInterfaceAccessPoint::~QNetworkManagerInterfaceAccessPoint()
 {
+    QDBusConnection::systemBus().disconnect(QLatin1String(NM_DBUS_SERVICE),
+                                  path(),
+                                  QLatin1String(NM_DBUS_INTERFACE_ACCESS_POINT),
+                                  QLatin1String("PropertiesChanged"),
+                                  this,SLOT(propertiesSwap(QMap<QString,QVariant>)));
 }
 
 quint32 QNetworkManagerInterfaceAccessPoint::flags() const