Index: src/app/legend/qgslegend.cpp
===================================================================
--- src/app/legend/qgslegend.cpp	(revisione 11533)
+++ src/app/legend/qgslegend.cpp	(copia locale)
@@ -735,6 +735,40 @@
       QgsMapLayerRegistry::instance()->removeMapLayer( llf->layer()->getLayerID() );
     }
   }
+  
+  //if the current item is a legend layer file group
+  QgsLegendLayerFileGroup* llfg = dynamic_cast<QgsLegendLayerFileGroup*>( currentItem() );
+  if ( llfg )
+  {
+    QgsDebugMsg( "QgsLegendLayerFileGroup" );
+    ll = dynamic_cast<QgsLegendLayer*>( llfg->parent() );
+    if (ll)
+    {
+      std::list<QgsMapLayer*> maplayers = ll->mapLayers();
+      int layerCount = maplayers.size();
+
+      for ( std::list<QgsMapLayer*>::iterator it = maplayers.begin(); it != maplayers.end(); ++it )
+      {
+	//remove the layer
+	if ( *it )
+	{
+	  removeLayer( *it, true );
+	}
+      }
+
+      if ( layerCount == 0 )
+      {
+	// delete the item only when it didn't have any child legend layer files
+	// (otherwise it is deleted in QgsLegend::removeLayer when deleting last legend layer file)
+	mStateOfCheckBoxes.erase( ll );
+	removeItem( ll );
+	delete ll;
+      }
+
+      adjustIconSize();
+      return;
+    }
+  }
   return;
 }