diff -r 56cd8111b7f7 -r 41300fa6a67c src/dbus/qdbusconnectioninterface.cpp
--- a/src/dbus/qdbusconnectioninterface.cpp	Tue Jan 26 12:42:25 2010 +0200
+++ b/src/dbus/qdbusconnectioninterface.cpp	Tue Feb 02 00:43:10 2010 +0200
@@ -49,7 +49,7 @@
 #include <QtCore/QVariant>
 #include <QtCore/QDebug>
 
-#include <qdbus_symbols_p.h>          // for the DBUS_* constants
+#include "qdbus_symbols_p.h"          // for the DBUS_* constants
 
 QT_BEGIN_NAMESPACE
 
@@ -336,8 +336,14 @@
     else if (qstrcmp(signalName, SIGNAL(serviceUnregistered(QString))) == 0)
         QDBusAbstractInterface::connectNotify(SIGNAL(NameLost(QString)));
 
-    else if (qstrcmp(signalName, SIGNAL(serviceOwnerChanged(QString,QString,QString))) == 0)
+    else if (qstrcmp(signalName, SIGNAL(serviceOwnerChanged(QString,QString,QString))) == 0) {
+        static bool warningPrinted = false;
+        if (!warningPrinted) {
+            qWarning("Connecting to deprecated signal QDBusConnectionInterface::serviceOwnerChanged(QString,QString,QString)");
+            warningPrinted = true;
+        }
         QDBusAbstractInterface::connectNotify(SIGNAL(NameOwnerChanged(QString,QString,QString)));
+    }
 }
 
 /*!
@@ -388,6 +394,12 @@
     empty string, it means the name \a name has just been created; if
     \a newOwner is empty, the name \a name has no current owner and is
     no longer available.
+
+    \note connecting to this signal will make the application listen for and
+    receive every single service ownership change on the bus. Depending on
+    how many services are running, this make the application be activated to
+    receive more signals than it needs. To avoid this problem, use the
+    QDBusServiceWatcher class, which can listen for specific changes.
 */
 
 /*!