diff -r 56cd8111b7f7 -r 41300fa6a67c src/gui/graphicsview/qgraphicswidget_p.cpp
--- a/src/gui/graphicsview/qgraphicswidget_p.cpp	Tue Jan 26 12:42:25 2010 +0200
+++ b/src/gui/graphicsview/qgraphicswidget_p.cpp	Tue Feb 02 00:43:10 2010 +0200
@@ -743,7 +743,7 @@
 /**
  * is called after a reparent has taken place to fix up the focus chain(s)
  */
-void QGraphicsWidgetPrivate::fixFocusChainBeforeReparenting(QGraphicsWidget *newParent, QGraphicsScene *newScene)
+void QGraphicsWidgetPrivate::fixFocusChainBeforeReparenting(QGraphicsWidget *newParent, QGraphicsScene *oldScene, QGraphicsScene *newScene)
 {
     Q_Q(QGraphicsWidget);
 
@@ -789,7 +789,7 @@
     // update tabFocusFirst for oldScene if the item is going to be removed from oldScene
     if (newParent)
         newScene = newParent->scene();
-    QGraphicsScene *oldScene = q->scene();
+
     if (oldScene && newScene != oldScene)
         oldScene->d_func()->tabFocusFirst = firstOld;