diff -Nuar ubiquity.orig/d-i/source/debian-installer-utils/chroot-setup.sh  ubiquity/d-i/source/debian-installer-utils/chroot-setup.sh
--- ubiquity.orig/d-i/source/debian-installer-utils/chroot-setup.sh	2010-03-22 18:30:36.000000000 +0100
+++ ubiquity/d-i/source/debian-installer-utils/chroot-setup.sh	2010-03-24 11:20:43.000000000 +0100
@@ -27,6 +27,10 @@
 	# Create a policy-rc.d to stop maintainer scripts using invoke-rc.d 
 	# from running init scripts. In case of maintainer scripts that don't
 	# use invoke-rc.d, add a dummy start-stop-daemon.
+	# LliureX has policy-rc. 
+        if [ -e /target/usr/sbin/policy-rc.d ]; then 
+                mv /target/usr/sbin/policy-rc.d /target/usr/sbin/policy-rc.d.REAL 
+        fi 
 	cat > /target/usr/sbin/policy-rc.d <<EOF
 #!/bin/sh
 exit 101
@@ -119,7 +123,8 @@
 	if [ -x /target/sbin/initctl.REAL ]; then
 		mv /target/sbin/initctl.REAL /target/sbin/initctl
 	fi
-
+        # LliureX has policy-rc.d, so we must manage this exception
+        mv /target/usr/sbin/policy-rc.d.REAL /target/usr/sbin/policy-rc.d 
 	# Undo the mounts done by the packages during installation.
 	# Reverse sorting to umount the deepest mount points first.
 	# Items with count of 1 are new.
diff -Nuar ubiquity.orig/ubiquity/install_misc.py ubiquity/ubiquity/install_misc.py
--- ubiquity.orig/ubiquity/install_misc.py	2010-03-25 08:28:56.000000000 +0100
+++ ubiquity/ubiquity/install_misc.py	2010-03-25 14:42:17.000000000 +0100
@@ -98,6 +98,11 @@
         return
 
     policy_rc_d = os.path.join(target, 'usr/sbin/policy-rc.d')
+    try:
+            if os.path.exists(policy_rc_d): 
+              os.rename(policy_rc_d, '%s.REAL' % policy_rc_d) 
+    except:
+           pass
     f = open(policy_rc_d, 'w')
     print >>f, """\
 #!/bin/sh
@@ -180,6 +185,11 @@
 
     policy_rc_d = os.path.join(target, 'usr/sbin/policy-rc.d')
     osextras.unlink_force(policy_rc_d)
+    try:
+            if os.path.exists(policy_rc_d_renamed): 
+               os.rename(policy_rc_d_renamed, policy_rc_d) 
+    except:
+            pass
 
 def record_installed(pkgs):
     """Record which packages we've explicitly installed so that we don't