3 files changed, 19 insertions, 6 deletions
diff --git a/src/corelib/animation/qpauseanimation.cpp b/src/corelib/animation/qpauseanimation.cpp
index c2599da692..04d8cca273 100644
--- a/src/corelib/animation/qpauseanimation.cpp
+++ b/src/corelib/animation/qpauseanimation.cpp
@@ -129,8 +129,13 @@ void QPauseAnimation::setDuration(int msecs)
         return;
     }
     Q_D(QPauseAnimation);
-    d->duration.setValue(msecs);
-    d->duration.notify();
+
+    if (msecs != d->duration) {
+        d->duration = msecs;
+        d->duration.notify();
+    } else {
+        d->duration.removeBindingUnlessInWrapper();
+    }
 }
 
 QBindable<int> QPauseAnimation::bindableDuration()
diff --git a/src/corelib/kernel/qtimer.cpp b/src/corelib/kernel/qtimer.cpp
index 0946e1af48..333e6c24ba 100644
--- a/src/corelib/kernel/qtimer.cpp
+++ b/src/corelib/kernel/qtimer.cpp
@@ -257,9 +257,11 @@ void QTimer::start()
 void QTimer::start(int msec)
 {
     Q_D(QTimer);
+    const bool intervalChanged = msec != d->inter;
     d->inter.setValue(msec);
     start();
-    d->inter.notify();
+    if (intervalChanged)
+        d->inter.notify();
 }
 
 
@@ -753,6 +755,7 @@ QBindable<bool> QTimer::bindableSingleShot()
 void QTimer::setInterval(int msec)
 {
     Q_D(QTimer);
+    const bool intervalChanged = msec != d->inter;
     d->inter.setValue(msec);
     if (d->id != INV_TIMER) {                        // create new timer
         QObject::killTimer(d->id);                        // restart timer
@@ -761,7 +764,8 @@ void QTimer::setInterval(int msec)
         // as timer state actually does not change
     }
 
-    d->inter.markDirty();
+    if (intervalChanged)
+        d->inter.markDirty();
 }
 
 int QTimer::interval() const
diff --git a/src/gui/image/qmovie.cpp b/src/gui/image/qmovie.cpp
index a293d358cf..b00d3ff25c 100644
--- a/src/gui/image/qmovie.cpp
+++ b/src/gui/image/qmovie.cpp
@@ -929,8 +929,12 @@ void QMovie::setSpeed(int percentSpeed)
     Q_D(QMovie);
     if (!d->speed && d->movieState == Running)
         d->nextImageTimer.start(nextFrameDelay());
-    d->speed.setValue(percentSpeed);
-    d->speed.notify();
+    if (percentSpeed != d->speed) {
+        d->speed = percentSpeed;
+        d->speed.notify();
+    } else {
+        d->speed.removeBindingUnlessInWrapper();
+    }
 }
 
 int QMovie::speed() const