empty page leads to results on duplex printers as expected

--- a/doc-src/TutorialI/tutorial.tex	Mon Apr 20 09:52:16 2009 +0200
+++ b/doc-src/TutorialI/tutorial.tex	Mon Apr 20 15:24:57 2009 +0200
@@ -39,10 +39,11 @@
 %University of Cambridge\\
 %Computer Laboratory
 }
+\pagenumbering{roman}
 \maketitle
+\newpage
 
-\pagenumbering{roman}
-\setcounter{page}{5}
+%\setcounter{page}{5}
 %\vspace*{\fill}
 %\begin{center}
 %\LARGE In memoriam \\[1ex]
@@ -52,6 +53,7 @@
 %\vspace*{\fill}
 %\vspace*{\fill}
 %\newpage
+
 \include{preface}
 
 \tableofcontents