Binary file slides04.pdf has changed

--- a/slides04.tex	Tue Oct 16 12:10:35 2012 +0100
+++ b/slides04.tex	Tue Oct 16 12:16:43 2012 +0100
@@ -916,11 +916,27 @@
 \item obtained also the source code for other machines
 \end{itemize}
 
+\end{frame}}
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   
+
+%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
+\mode<presentation>{
+\begin{frame}[c]
+\frametitle{\begin{tabular}{@ {}c@ {}}Diebold Machines\end{tabular}}
+
+What could go wrong?\pause Failure-in-depth.\bigskip\pause
+
+A non-obvious problem:
+
+\begin{itemize}
+\item you can nowadays get old machines, which still store old polls 
+\end{itemize}
 
 \end{frame}}
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%   
 
 
+
 %%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%
 \mode<presentation>{
 \begin{frame}[c]