deb-src http://ftp.nl.debian.org/debian/ lenny main
deb http://security.debian.org lenny/updates main
+
+deb file:///data/apt-repository/public/ stderr main
+
+# Allow packages from testing to be installed
+deb http://ftp.nl.debian.org/debian/ squeeze main
+deb-src http://ftp.nl.debian.org/debian/ squeeze main