--- qt-opensource-4.8.0.old/src/corelib/kernel/qobject.cpp	2011-12-08 00:06:03.000000000 -0500
+++ qt-opensource-4.8.0.new/src/corelib/kernel/qobject.cpp	2011-12-30 01:28:29.339975365 -0500
@@ -69,6 +69,16 @@
 
 QT_BEGIN_NAMESPACE
 
+class QScopedLoopLevelIncrementer {
+    QThreadData *threadData;
+public:
+    QScopedLoopLevelIncrementer(QThreadData *threadData)
+        : threadData(threadData)
+    { ++threadData->loopLevel; }
+    ~QScopedLoopLevelIncrementer()
+    { --threadData->loopLevel; }
+};
+
 static int DIRECT_CONNECTION_ONLY = 0;
 
 static int *queuedConnectionTypes(const QList<QByteArray> &typeNames)
@@ -841,6 +851,15 @@ QObject::~QObject()
 
     if (d->isSignalConnected(0)) {
         QT_TRY {
+            // There exist cases where one connects the destroyed() signal to a slot
+            // in which deleteLater() calls are made or triggered.  In such cases, as
+            // deleteLater() calls are not processed until the (event) loopLevel drops
+            // below the current level (which is often (always?) 1 here), the deferred
+            // deletions may not be done until the application exits.  To have such
+            // deleteLater() calls processed in a reasonably timely manner from the
+            // the main event loop, temporarily increase the loopLevel here specifically
+            // for the destroyed() signal call.
+            QScopedLoopLevelIncrementer loopLevelIncrementer(d_func()->threadData);
             emit destroyed(this);
         } QT_CATCH(...) {
             // all the signal/slots connections are still in place - if we don't