diff -Nru sysvinit-2.87dsf/debian/changelog sysvinit-2.87dsf/debian/changelog
--- sysvinit-2.87dsf/debian/changelog	2009-10-19 14:14:36.000000000 +0100
+++ sysvinit-2.87dsf/debian/changelog	2009-11-03 23:14:22.000000000 +0000
@@ -1,3 +1,11 @@
+sysvinit (2.87dsf-4ubuntu12) UNRELEASED; urgency=low
+
+  * debian/initscripts/etc/init.d/umountfs: do not use the -f option when 
+    unmounting WEAK_MTPTS, in the case of bind mounts in particular, that 
+    results in the underlying device being unmounted, LP: #468589  
+
+ -- Agostino Russo <agostino.russo@gmail.com>  Tue, 03 Nov 2009 23:04:53 +0000
+
 sysvinit (2.87dsf-4ubuntu11) karmic; urgency=low
 
   * debian/control:
diff -Nru sysvinit-2.87dsf/debian/initscripts/etc/init.d/umountfs sysvinit-2.87dsf/debian/initscripts/etc/init.d/umountfs
--- sysvinit-2.87dsf/debian/initscripts/etc/init.d/umountfs	2009-10-14 05:15:49.000000000 +0100
+++ sysvinit-2.87dsf/debian/initscripts/etc/init.d/umountfs	2009-11-03 23:04:26.000000000 +0000
@@ -93,14 +93,15 @@
 	# Unmount local filesystems
 	#
 	if [ "$WEAK_MTPTS" ]; then
+		# Do not use -f umount option for WEAK_MTPTS
 		if [ "$VERBOSE" = no ]
 		then
 			log_action_begin_msg "Unmounting weak filesystems"
-			fstab-decode umount -f -r -d $WEAK_MTPTS
+			fstab-decode umount -r -d $WEAK_MTPTS
 			log_action_end_msg $?
 		else
 			log_daemon_msg "Will now unmount weak filesystems"
-			fstab-decode umount -f -v -r -d $WEAK_MTPTS
+			fstab-decode umount -v -r -d $WEAK_MTPTS
 			log_end_msg $?
 		fi
 	fi