--- a/demos/sub-attaq/graphicsscene.cpp	Tue Jan 26 12:42:25 2010 +0200
+++ b/demos/sub-attaq/graphicsscene.cpp	Tue Feb 02 00:43:10 2010 +0200
@@ -278,4 +278,5 @@
 
     boat->stop();
     boat->hide();
+    boat->setEnabled(true);
 }