-deb http://ftp1.us.debian.org/debian unstable main contrib non-free
-deb http://non-us.debian.org/debian-non-US unstable non-US
+# CDROMs are managed through the apt-cdrom tool.
+deb http://http.us.debian.org/debian stable main contrib non-free
+deb http://security.debian.org stable/updates main contrib non-free
+
+# Uncomment if you want the apt-get source function to work
+#deb-src http://http.us.debian.org/debian stable main contrib non-free
+#deb-src http://security.debian.org stable/updates main contrib non-free