--- a/slides/slides03.tex	Sat Oct 04 13:17:18 2014 +0100
+++ b/slides/slides03.tex	Sat Oct 04 13:32:51 2014 +0100
@@ -94,12 +94,12 @@
 \begin{columns}[b]
 \begin{column}{.4\textwidth}
 \centering
-\includegraphics[scale=1.2]{pics/barrier.jpg}\\
+\includegraphics[scale=1.2]{../pics/barrier.jpg}\\
 lectures so far
 \end{column}
 \begin{column}<2>{.4\textwidth}
 \centering
-\includegraphics[scale=0.32]{pics/trainwreck.jpg}\\
+\includegraphics[scale=0.32]{../pics/trainwreck.jpg}\\
 today
 \end{column}
 \end{columns}
@@ -394,7 +394,7 @@
 \begin{frame}[c]
 
 \begin{center}
-\includegraphics[scale=0.45]{pics/trainwreck.jpg}\\
+\includegraphics[scale=0.45]{../pics/trainwreck.jpg}\\
 one general defence mechanism is\\\alert{\bf defence in depth}
 \end{center}
 
@@ -480,9 +480,9 @@
 \begin{frame}[c]
 
 \begin{center}
-\only<1>{\includegraphics[scale=0.9]{pics/stack1}\;\;}
-\only<2>{\includegraphics[scale=0.9]{pics/stack2}\;\;}
-\only<3>{\includegraphics[scale=0.9]{pics/stack3}\;\;}
+\only<1>{\includegraphics[scale=0.9]{../pics/stack1}\;\;}
+\only<2>{\includegraphics[scale=0.9]{../pics/stack2}\;\;}
+\only<3>{\includegraphics[scale=0.9]{../pics/stack3}\;\;}
 \end{center}
     
 \end{frame}