diff --git a/app/ModulesHandle.cpp b/app/ModulesHandle.cpp
index 0b671bd..8f0a6f4 100644
--- a/app/ModulesHandle.cpp
+++ b/app/ModulesHandle.cpp
@@ -174,12 +174,14 @@ Void ModulesHandle::updateMenus()
 
 Void ModulesHandle::readSettings()
 {
-
+  QSettings appSettings;
+  m_arrayActions[FORCE_NEW_WINDOW_ACT]->setChecked( appSettings.value( "ModulesHandle/UseNewWindow", false ).toBool() );
 }
 
 Void ModulesHandle::writeSettings()
 {
-
+  QSettings appSettings;
+  appSettings.setValue( "ModulesHandle/UseNewWindow", m_arrayActions[FORCE_NEW_WINDOW_ACT]->isChecked() );
 }
 
 Void ModulesHandle::processOpt( Int index )
@@ -301,7 +303,7 @@ Void ModulesHandle::enableModuleIf( PlaYUVerAppModuleIf *pcCurrModuleIf )
   {
     if( ( pcCurrModuleIf->m_pcModule->m_uiModuleRequirements & MODULE_REQUIRES_NEW_WINDOW ) || bShowModulesNewWindow )
     {
-      pcModuleSubWindow = new VideoSubWindow( m_pcParent, true );
+      pcModuleSubWindow = new VideoSubWindow( this , true );
       pcModuleSubWindow->setWindowShortName( windowName );
       pcModuleSubWindow->setWindowName( windowName );
 
@@ -310,7 +312,7 @@ Void ModulesHandle::enableModuleIf( PlaYUVerAppModuleIf *pcCurrModuleIf )
 
       pcCurrModuleIf->m_pcDisplaySubWindow = pcModuleSubWindow;
       pcCurrModuleIf->m_pcDisplaySubWindow->enableModule( pcCurrModuleIf, true );
-      m_pcMdiArea->addSubWindow( pcModuleSubWindow );
+      //m_pcMdiArea->addSubWindow( pcModuleSubWindow );
     }
   }
   else if( pcCurrModuleIf->m_pcModule->m_iModuleType == FRAME_MEASUREMENT_MODULE )
@@ -340,7 +342,13 @@ Void ModulesHandle::enableModuleIf( PlaYUVerAppModuleIf *pcCurrModuleIf )
 
   applyModuleIf( pcCurrModuleIf, false );
   QCoreApplication::processEvents();
-  //pcModuleSubWindow->show();
+
+  if( pcModuleSubWindow )
+  {
+    QMdiSubWindow* window = m_pcMdiArea->addSubWindow( pcModuleSubWindow );
+    window->show();
+  }
+
   return;
 }
 
diff --git a/app/ModulesHandle.h b/app/ModulesHandle.h
index 3c362b0..a07c0f8 100644
--- a/app/ModulesHandle.h
+++ b/app/ModulesHandle.h
@@ -60,8 +60,6 @@ public:
   Void readSettings();
   Void writeSettings();
 
-  SubWindowHandle* processModuleHandlingOpt();
-
   static Void destroyModuleIf( PlaYUVerAppModuleIf* pcCurrModuleIf );
   static Bool applyModuleIf( PlaYUVerAppModuleIf* pcCurrModuleIf, Bool isPlaying = false, Bool disableThreads = false );
 
diff --git a/app/QualityHandle.cpp b/app/QualityHandle.cpp
index a42bfee..ba99ec1 100644
--- a/app/QualityHandle.cpp
+++ b/app/QualityHandle.cpp
@@ -86,6 +86,8 @@ QDockWidget* QualityHandle::createDock()
   connect( m_pcQualityHandleSideBar, SIGNAL( signalQualityMetricChanged(int) ), this, SLOT( slotQualityMetricChanged(int) ) );
   connect( m_mapperQualityMetric, SIGNAL( mapped(int) ), this, SLOT( slotQualityMetricChanged(int) ) );
 
+  slotQualityMetricChanged( 0 );
+
   return m_pcQualityHandleDock;
 }
 
@@ -96,12 +98,15 @@ Void QualityHandle::updateMenus()
 
 Void QualityHandle::readSettings()
 {
-
+  QSettings appSettings;
+  Int metric = appSettings.value( "QualityHandle/Metric", 0 ).toInt();
+  slotQualityMetricChanged( metric );
 }
 
 Void QualityHandle::writeSettings()
 {
-
+  QSettings appSettings;
+  appSettings.setValue( "QualityHandle/Metric", m_iQualityMetricIdx );
 }
 
 Void QualityHandle::update( VideoSubWindow* currSubWindow )
@@ -114,6 +119,7 @@ Void QualityHandle::slotQualityMetricChanged( Int idx )
   m_actionGroupQualityMetric->actions().at( idx )->setChecked( true );
   m_pcQualityHandleSideBar->updateQualityMetric( idx );
   m_pcQualityHandleDock->show();
+  m_iQualityMetricIdx = idx;
 }
 
 Void QualityHandle::slotSelectReference()
diff --git a/app/QualityHandle.h b/app/QualityHandle.h
index 74fc297..d2f59c4 100644
--- a/app/QualityHandle.h
+++ b/app/QualityHandle.h
@@ -68,6 +68,7 @@ private:
   QVector<QAction*> m_arrayActions;
   QActionGroup* m_actionGroupQualityMetric;
   QSignalMapper* m_mapperQualityMetric;
+  Int m_iQualityMetricIdx;
 
   QMenu* m_pcMenuQuality;
 
diff --git a/app/VideoHandle.cpp b/app/VideoHandle.cpp
index 3d60e5b..80ac936 100644
--- a/app/VideoHandle.cpp
+++ b/app/VideoHandle.cpp
@@ -140,7 +140,7 @@ QDockWidget* VideoHandle::createDock()
 
 QWidget* VideoHandle::createStatusBarMessage()
 {
-  QWidget* statusBarWidget = new QWidget;
+  QWidget* pcStatusBarWidget = new QWidget;
   QHBoxLayout* mainlayout = new QHBoxLayout;
 
   m_pcFormatCodeLabel = new QLabel;
@@ -164,9 +164,9 @@ QWidget* VideoHandle::createStatusBarMessage()
   mainlayout->addWidget( m_pcFormatCodeLabel );
   mainlayout->addWidget( m_pcResolutionLabel );
   mainlayout->addWidget( m_pcColorSpace );
-  statusBarWidget->setLayout( mainlayout );
+  pcStatusBarWidget->setLayout( mainlayout );
 
-  return statusBarWidget;
+  return pcStatusBarWidget;
 }
 
 Void VideoHandle::updateMenus()
@@ -232,9 +232,10 @@ Void VideoHandle::update()
     }
     else
     {
-      //m_pcStreamProperties->setData( NULL );
       m_pcFrameNumInfo->setCurrFrameNum( 0 );
-      m_pcFormatCodeLabel->clear();
+      m_pcFormatCodeLabel->setText( QString( ""));
+      if( m_pcCurrentVideoSubWindow->getIsModule() )
+        m_pcFormatCodeLabel->setText( QString( "Module"));
     }
 
     if( pcFrame )
@@ -251,14 +252,13 @@ Void VideoHandle::update()
     else
       m_arrayActions[PLAY_ACT]->setIcon( style()->standardIcon( QStyle::SP_MediaPlay ) );
 
-    //m_appModuleQuality->update( m_pcCurrentVideoSubWindow );
-    return;
   }
-  //m_pcStreamProperties->setData( NULL );
-  m_pcFramePropertiesSideBar->setData( NULL, false );
-  m_pcFrameSlider->setValue( 0 );
-  m_pcFrameNumInfo->setCurrFrameNum( 0 );
-  m_pcFrameNumInfo->setTotalFrameNum( 0 );
+  else
+  {
+    m_pcFramePropertiesSideBar->setData( NULL, false );
+    m_pcFrameSlider->setValue( 0 );
+    m_pcFrameNumInfo->clear();
+  }
 }
 
 Void VideoHandle::update( VideoSubWindow* currSubWindow )
diff --git a/app/VideoSubWindow.cpp b/app/VideoSubWindow.cpp
index 4825102..7641cb5 100644
--- a/app/VideoSubWindow.cpp
+++ b/app/VideoSubWindow.cpp
@@ -169,7 +169,8 @@ Bool VideoSubWindow::loadFile( QString cFilename, Bool bForceDialog )
 
   m_cFilename = cFilename;
   m_cWindowShortName = QFileInfo( cFilename ).fileName();
-  setWindowName( m_pCurrStream->getStreamInformationString() );
+  //setWindowName( m_pCurrStream->getStreamInformationString() );
+  setWindowName( m_cWindowShortName );
   return true;
 }
 
@@ -195,7 +196,8 @@ Bool VideoSubWindow::loadFile( PlaYUVerStreamInfo* streamInfo )
 
   m_cFilename = streamInfo->m_cFilename;
   m_cWindowShortName = QFileInfo( streamInfo->m_cFilename ).fileName();
-  setWindowName( m_pCurrStream->getStreamInformationString() );
+  //setWindowName( m_pCurrStream->getStreamInformationString() );
+  setWindowName( m_cWindowShortName );
   return true;
 }
 
@@ -246,12 +248,12 @@ Void VideoSubWindow::setCurrFrame( PlaYUVerFrame* pcCurrFrame )
 {
   m_pcCurrFrame = pcCurrFrame;
   m_cViewArea->setImage( m_pcCurrFrame );
-  if( !isVisible() )
-  {
-    show();
-    resize( sizeHint() );
-    zoomToFit();
-  }
+//  if( !isVisible() )
+//  {
+//    show();
+//    resize( sizeHint() );
+//    zoomToFit();
+//  }
 }
 
 Void VideoSubWindow::refreshFrame()
diff --git a/app/plaYUVerApp.cpp b/app/plaYUVerApp.cpp
index c42330e..519adbe 100644
--- a/app/plaYUVerApp.cpp
+++ b/app/plaYUVerApp.cpp
@@ -45,7 +45,7 @@ plaYUVerApp::plaYUVerApp()
   m_pDBusAdaptor = new PlaYUVerAppAdaptor( this );
 #endif
 
-  mdiArea = new PlaYUVerMdiArea;
+  mdiArea = new PlaYUVerMdiArea( this );
   setCentralWidget( mdiArea );
   //mdiArea->setActivationOrder( QMdiArea::ActivationHistoryOrder );
 
@@ -448,56 +448,6 @@ Void plaYUVerApp::updateZoomFactorSBox()
   }
 }
 
-Void plaYUVerApp::update()
-{
-  SubWindowHandle *new_window = activeSubWindow();
-  QCoreApplication::processEvents();
-  //if( activeSubWindow() != m_pcCurrentSubWindow )
-  {
-    m_pcCurrentSubWindow = NULL;
-    m_pcCurrentVideoSubWindow = NULL;
-    if( activeSubWindow() )
-    {
-      m_pcCurrentSubWindow = new_window;
-
-      switch( m_pcCurrentSubWindow->getCategory() )
-      {
-      case SubWindowHandle::VIDEO_SUBWINDOW:
-        m_pcCurrentVideoSubWindow = qobject_cast<VideoSubWindow*>( m_pcCurrentSubWindow );
-        break;
-      }
-
-      setWindowTitle( QApplication::applicationName() + " - " + m_pcCurrentSubWindow->getWindowName() );
-
-      if( m_pcCurrentVideoSubWindow )
-      {
-        if( !plaYUVerApp::findSubWindow( mdiArea, m_pcCurrentVideoSubWindow->getRefSubWindow() ) )
-        {
-          m_pcCurrentVideoSubWindow->setRefSubWindow( NULL );
-        }
-      }
-      updateZoomFactorSBox();
-    }
-  }
-  m_appModuleVideo->update( m_pcCurrentVideoSubWindow );
-  m_appModuleQuality->update( m_pcCurrentVideoSubWindow );
-  updateMenus();
-}
-
-// -----------------------  Status bar Functions  -----------------------
-
-Void plaYUVerApp::updateStatusBar( const QString& statusBarString )
-{
-  if( !statusBarString.isEmpty() )
-  {
-    statusBar()->showMessage( statusBarString, 5000 );
-  }
-  else
-  {
-    statusBar()->showMessage( " " );
-  }
-}
-
 // -----------------------  Drag and drop functions  ----------------------
 
 Void plaYUVerApp::dragEnterEvent( QDragEnterEvent *event )
@@ -519,7 +469,12 @@ Void plaYUVerApp::dropEvent( QDropEvent *event )
   }
 }
 
-// -----------------------  Gui Functions  -----------------------
+// -----------------------  Sub Window Functions  -----------------------
+
+void plaYUVerApp::tileSubWindows()
+{
+  mdiArea->tileSubWindows();
+}
 
 SubWindowHandle *plaYUVerApp::activeSubWindow()
 {
@@ -575,6 +530,56 @@ Void plaYUVerApp::setActiveSubWindow( QWidget *window )
   mdiArea->setActiveSubWindow( qobject_cast<QMdiSubWindow *>( window ) );
 }
 
+// -----------------------  Update Functions  -----------------------
+
+Void plaYUVerApp::update()
+{
+  SubWindowHandle *new_window = activeSubWindow();
+  QCoreApplication::processEvents();
+  //if( activeSubWindow() != m_pcCurrentSubWindow )
+  {
+    m_pcCurrentSubWindow = NULL;
+    m_pcCurrentVideoSubWindow = NULL;
+    if( activeSubWindow() )
+    {
+      m_pcCurrentSubWindow = new_window;
+
+      switch( m_pcCurrentSubWindow->getCategory() )
+      {
+      case SubWindowHandle::VIDEO_SUBWINDOW:
+        m_pcCurrentVideoSubWindow = qobject_cast<VideoSubWindow*>( m_pcCurrentSubWindow );
+        break;
+      }
+
+      setWindowTitle( QApplication::applicationName() + " - " + m_pcCurrentSubWindow->getWindowName() );
+
+      if( m_pcCurrentVideoSubWindow )
+      {
+        if( !plaYUVerApp::findSubWindow( mdiArea, m_pcCurrentVideoSubWindow->getRefSubWindow() ) )
+        {
+          m_pcCurrentVideoSubWindow->setRefSubWindow( NULL );
+        }
+      }
+      updateZoomFactorSBox();
+    }
+  }
+  m_appModuleVideo->update( m_pcCurrentVideoSubWindow );
+  m_appModuleQuality->update( m_pcCurrentVideoSubWindow );
+  updateMenus();
+}
+
+Void plaYUVerApp::updateStatusBar( const QString& statusBarString )
+{
+  if( !statusBarString.isEmpty() )
+  {
+    statusBar()->showMessage( statusBarString, 5000 );
+  }
+  else
+  {
+    statusBar()->showMessage( " " );
+  }
+}
+
 Void plaYUVerApp::updateMenus()
 {
   Bool hasSubWindow = ( activeSubWindow() != 0 );
@@ -658,7 +663,7 @@ Void plaYUVerApp::updateWindowMenu()
   }
 }
 
-
+// -----------------------  Create Functions  -----------------------
 
 Void plaYUVerApp::createActions()
 {
@@ -787,7 +792,8 @@ Void plaYUVerApp::createActions()
   m_arrayActions[TILE_WINDOWS_ACT] = new QAction( tr( "Tile" ), this );
   m_arrayActions[TILE_WINDOWS_ACT]->setIcon( QIcon( ":images/windowstile.png" ) );
   m_arrayActions[TILE_WINDOWS_ACT]->setStatusTip( tr( "Tile the windows" ) );
-  connect( m_arrayActions[TILE_WINDOWS_ACT], SIGNAL( triggered() ), mdiArea, SLOT( tileSubWindows() ) );
+  //connect( m_arrayActions[TILE_WINDOWS_ACT], SIGNAL( triggered() ), mdiArea, SLOT( tileSubWindows() ) );
+  connect( m_arrayActions[TILE_WINDOWS_ACT], SIGNAL( triggered() ), this, SLOT( tileSubWindows() ) );
 
   m_arrayActions[CASCADE_WINDOWS_ACT] = new QAction( tr( "Cascade" ), this );
   m_arrayActions[CASCADE_WINDOWS_ACT]->setIcon( QIcon( ":images/windowscascade.png" ) );
@@ -942,10 +948,13 @@ Void plaYUVerApp::createDockWidgets()
 
 Void plaYUVerApp::createStatusBar()
 {
-  statusBar()->addPermanentWidget(   m_appModuleVideo->createStatusBarMessage() );
+  //! Warning: the following widget cannot change size too much
+  statusBar()->addPermanentWidget( m_appModuleVideo->createStatusBarMessage() );
   statusBar()->showMessage( tr( "Ready" ) );
 }
 
+
+
 Void plaYUVerApp::addStreamInfoToRecentList( PlaYUVerStreamInfo streamInfo )
 {
   Int idx = findPlaYUVerStreamInfo( m_aRecentFileStreamInfo, streamInfo.m_cFilename );
@@ -994,11 +1003,13 @@ Void plaYUVerApp::readSettings()
   m_appTool = ( ViewArea::eTool )appSettings.value( "MainWindow/SelectedTool", ViewArea::NavigationTool ).toInt();
   setTool( m_appTool );
 
-  QVariant value = appSettings.value("MainWindow/RecentFileList");
+  QVariant value = appSettings.value( "MainWindow/RecentFileList" );
   m_aRecentFileStreamInfo = value.value<PlaYUVerStreamInfoVector>();
   updateRecentFileActions();
 
   m_appModuleVideo->readSettings();
+  m_appModuleQuality->readSettings();
+  m_appModuleExtensions->readSettings();
 }
 
 Void plaYUVerApp::writeSettings()
@@ -1012,9 +1023,11 @@ Void plaYUVerApp::writeSettings()
 
   QVariant var;
   var.setValue<PlaYUVerStreamInfoVector>( m_aRecentFileStreamInfo );
-  appSettings.setValue("MainWindow/RecentFileList", var );
+  appSettings.setValue( "MainWindow/RecentFileList", var );
 
   m_appModuleVideo->writeSettings();
+  m_appModuleQuality->writeSettings();
+  m_appModuleExtensions->writeSettings();
 }
 
 }  // NAMESPACE
diff --git a/app/plaYUVerApp.h b/app/plaYUVerApp.h
index 3190271..9354cac 100644
--- a/app/plaYUVerApp.h
+++ b/app/plaYUVerApp.h
@@ -64,6 +64,8 @@ protected:
 
 private Q_SLOTS:
 
+  void about();
+
   /**
    *  File functions slots
    */
@@ -90,18 +92,18 @@ private Q_SLOTS:
 
   void setTool( int idxTool );
 
+  void dragEnterEvent( QDragEnterEvent *event );
+  void dropEvent( QDropEvent *event );
+
+  void tileSubWindows();
+  void setActiveSubWindow( QWidget *window );
+
+
   void update();
   void updateWindowMenu();
   void updateZoomFactorSBox();
   void updateStatusBar( const QString& );
 
-  void about();
-
-  void dragEnterEvent( QDragEnterEvent *event );
-  void dropEvent( QDropEvent *event );
-
-  void setActiveSubWindow( QWidget *window );
-
 private:
 
   class PlaYUVerMdiArea: public QMdiArea
@@ -141,6 +143,13 @@ private:
 
   QString m_cLastOpenPath;
 
+  SubWindowHandle *activeSubWindow();
+  template<typename T>
+  T findSubWindow( const QMdiArea* mdiArea, const QString& name );
+  template<typename T>
+  T findSubWindow( const QMdiArea* mdiArea, const T subWindow );
+  static VideoSubWindow* findVideoSubWindow( const QMdiArea* mdiArea, const QString& fileName );
+
   Void updateMenus();
 
   Void createActions();
@@ -155,14 +164,6 @@ private:
   Void readSettings();
   Void writeSettings();
 
-  SubWindowHandle *activeSubWindow();
-
-  template<typename T>
-  T findSubWindow( const QMdiArea* mdiArea, const QString& name );
-  template<typename T>
-  T findSubWindow( const QMdiArea* mdiArea, const T subWindow );
-
-  static VideoSubWindow* findVideoSubWindow( const QMdiArea* mdiArea, const QString& fileName );
 
   QDoubleSpinBox *m_pcZoomFactorSBox;