diff -up gtk+-2.12.9/gtk/gtknotebook.c.tab-drag-crash gtk+-2.12.9/gtk/gtknotebook.c
--- gtk+-2.12.9/gtk/gtknotebook.c.tab-drag-crash	2008-04-09 21:50:07.000000000 -0400
+++ gtk+-2.12.9/gtk/gtknotebook.c	2008-04-09 21:50:12.000000000 -0400
@@ -2729,7 +2729,6 @@ hide_drag_window (GtkNotebook        *no
       else
 	gtk_widget_unparent (page->tab_label);
 
-      gtk_widget_set_parent_window (page->tab_label, widget->window);
       gtk_widget_set_parent (page->tab_label, widget);
       g_object_unref (page->tab_label);
     }