diff -r 56cd8111b7f7 -r 41300fa6a67c src/gui/widgets/qtoolbarlayout.cpp
--- a/src/gui/widgets/qtoolbarlayout.cpp	Tue Jan 26 12:42:25 2010 +0200
+++ b/src/gui/widgets/qtoolbarlayout.cpp	Tue Feb 02 00:43:10 2010 +0200
@@ -642,7 +642,7 @@
     return result;
 }
 
-void QToolBarLayout::setExpanded(bool exp, bool animated)
+void QToolBarLayout::setExpanded(bool exp)
 {
     if (exp == expanded)
         return;
@@ -654,7 +654,7 @@
     if (!tb)
         return;
     if (QMainWindow *win = qobject_cast<QMainWindow*>(tb->parentWidget())) {
-        animating = true;
+        animating = !tb->isWindow() && win->isAnimated();
         QMainWindowLayout *layout = qobject_cast<QMainWindowLayout*>(win->layout());
         if (expanded) {
             tb->raise();
@@ -665,7 +665,7 @@
                 layoutActions(rect.size());
             }
         }
-        layout->layoutState.toolBarAreaLayout.apply(animated);
+        layout->layoutState.toolBarAreaLayout.apply(animating);
     }
 }