--- init.d/localmount.in	2012-12-07 16:53:28.000000000 +0100
+++ init.d/localmount.in	2013-04-25 19:15:42.043727697 +0200
@@ -30,6 +30,23 @@
 	mount -at "$types" $no_netdev
 	eend $? "Some local filesystem failed to mount"
 
+	# Remount any read-only bind-mounts so that they actually become read-only!
+	for m in `awk '/^\//   {
+		split($4,opts,",");
+		bm = ro = na = 0;
+		for (i in opts)
+		{
+			ro = ro || (opts[i] == "ro");
+			bm = bm || ((opts[i] == "bind") || (opts[i] == "rbind"));
+			na = na || (opts[i] == "noauto");
+		}
+		if (bm && ro && !na)
+			print $2;
+		}' /etc/fstab`
+	do
+		mount -o remount "${m}"
+	done
+
 	# Always return 0 - some local mounts may not be critical for boot
 	return 0
 }