diff -r 923ff622b8b9 -r 4633027730f5 src/hbwidgets/widgets/hbcombobox_p.cpp
--- a/src/hbwidgets/widgets/hbcombobox_p.cpp	Tue Jul 06 14:36:53 2010 +0300
+++ b/src/hbwidgets/widgets/hbcombobox_p.cpp	Wed Aug 18 10:05:37 2010 +0300
@@ -84,10 +84,14 @@
         return;
     }
 
-    if ( !mDropDown->scene() || !mDropDown->scene( )->property( "destructed" ).isValid( ) ) {
-        delete mDropDown;
-        mDropDown = 0;
+    //if drop down is added to scene then remove it from scene so that scene does not deletes
+    //drop down again
+    if( mDropDown->scene() ) {
+        q->scene()->removeItem(mDropDown);
     }
+
+    delete mDropDown;
+    mDropDown = 0;
 }
 
 void HbComboBoxPrivate::init( )
@@ -99,16 +103,16 @@
 {
     Q_Q( HbComboBox );
 
-    mTextItem = q->style( )->createPrimitive( HbStyle::P_ComboBox_text, q );
+    mTextItem = HbStylePrivate::createPrimitive( HbStylePrivate::P_ComboBox_text, q );
     HbStyle::setItemName( mTextItem, "combobox_labelfield" );
 
-    mBackgroundItem = q->style( )->createPrimitive( HbStyle::P_ComboBox_background, q );
+    mBackgroundItem = HbStylePrivate::createPrimitive( HbStylePrivate::P_ComboBox_background, q );
     HbStyle::setItemName( mBackgroundItem, "text_background" );
 
-    mButton = q->style( )->createPrimitive( HbStyle::P_ComboBox_button, q );
+    mButton = HbStylePrivate::createPrimitive( HbStylePrivate::P_ComboBox_button, q );
     HbStyle::setItemName( mButton, "combobox_button" );
 
-    mButtonTouchAreaItem = q->style( )->createPrimitive( HbStyle::P_ComboBoxButton_toucharea, q );
+    mButtonTouchAreaItem = HbStylePrivate::createPrimitive( HbStylePrivate::P_ComboBoxButton_toucharea, q );
 
     static_cast<HbTouchArea*>( mButtonTouchAreaItem )->grabGesture( Qt::TapGesture );
 }
@@ -121,7 +125,10 @@
     }
     mIsDown = true;
     q->updatePrimitives( );
-    q->setProperty( "state", "pressed" );
+    //Update the state only when valid model is there
+    if ( mModel && mModel->rowCount( ) ) {
+        q->setProperty( "state", "pressed" );
+    }
 }
 
 void HbComboBoxPrivate::touchAreaReleaseEvent(  )
@@ -238,6 +245,22 @@
     }
 }
 
+void HbComboBoxPrivate::resetGeometryChangeFlag( )
+{
+    Q_Q( HbComboBox );
+    QGraphicsWidget *p = q;
+    if( widgetGeometryChange.count() > 0 ) {
+        while ( p->parentWidget( ) ) {
+            p = p->parentWidget( );
+            if ( !widgetGeometryChange.value( p ) ) {
+                //if earlier geometry change flag was disabled then disable this flag
+                p->setFlag( QGraphicsItem::ItemSendsGeometryChanges, false );
+            }
+        }
+        widgetGeometryChange.clear();
+    }
+}
+
 void HbComboBoxPrivate::positionDropDown( )
 {
     Q_Q( HbComboBox );
@@ -253,7 +276,7 @@
     if( q->mainWindow( )->orientation( ) == Qt::Horizontal ) {
         if( mDropDownRowsInLandscape == -1 ) {
             HbStyleParameters params;
-            q->style( )->parameters( params );
+            q->style()->parameters( params );
             params.addParameter( "max-rows-in-dropdown" );
             q->polish( params );
             mDropDownRowsInLandscape = params.value( "max-rows-in-dropdown" ).toInt( );
@@ -262,7 +285,7 @@
     } else if( q->mainWindow( )->orientation( ) == Qt::Vertical ) {
         if( mDropDownRowsInPortrait == -1 ) {
             HbStyleParameters params;
-            q->style( )->parameters( params );
+            q->style()->parameters( params );
             params.addParameter( "max-rows-in-dropdown" );
             q->polish( params );
             mDropDownRowsInPortrait = params.value( "max-rows-in-dropdown" ).toInt( );
@@ -388,6 +411,15 @@
     QGraphicsWidget *p = q;
     while ( p->parentWidget( ) ) {
         p = p->parentWidget( );
+        //cache the original geometry change flag of parent widget
+        QGraphicsItem::GraphicsItemFlags itemFlags = p->flags( );
+        bool geometryFlagEnabled =  itemFlags & QGraphicsItem::ItemSendsGeometryChanges;
+        widgetGeometryChange.insert(p, geometryFlagEnabled);
+
+        //This flag is being set since geometry change notification is required for properly
+        //positioning drop down when its visible and combobox position is changed for example
+        //when orientation change happens.
+        p->setFlag( QGraphicsItem::ItemSendsGeometryChanges );
     }
     mDropDown->setZValue( p->zValue( ) + 1 );
 }
@@ -403,7 +435,7 @@
         } else {
             HbStyleOptionComboBox comboBoxOption;
             q->initStyleOption( &comboBoxOption );
-            q->style( )->updatePrimitive( mTextItem, HbStyle::P_ComboBox_text, &comboBoxOption );
+            HbStylePrivate::updatePrimitive( mTextItem, HbStylePrivate::P_ComboBox_text, &comboBoxOption );
         }
         mCurrentIndex = aIndex;
     } else {
@@ -600,8 +632,8 @@
             } else {
                 HbStyleOptionComboBox comboBoxOption;
                 q->initStyleOption(&comboBoxOption);
-                q->style( )->updatePrimitive(
-                    mTextItem, HbStyle::P_ComboBox_text, &comboBoxOption );
+                HbStylePrivate::updatePrimitive(
+                    mTextItem, HbStylePrivate::P_ComboBox_text, &comboBoxOption );
             }
         }
         currentIndexChanged( mCurrentIndex );