diff --git a/debian/changelog b/debian/changelog
index e3f8b70e..7378ef42 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -21,6 +21,8 @@ livecd-rootfs (0.99) UNRELEASED; urgency=low
     backup is taken; this allows dropping the hack of reinstalling the keyring
     package at the end of the build.  It might break apt-get update for UMR
     before the host keys are appended to the trusted keyring though.
+  * Remove ${ROOT}var/cache/apt/{,src}pkgcache.bin after installing the moblin
+    keyring package, workaround for LP #442082.
 
  -- Loïc Minier <loic.minier@ubuntu.com>  Thu, 24 Sep 2009 11:52:25 +0200
 
diff --git a/livecd.sh b/livecd.sh
index ad69264a..851018be 100755
--- a/livecd.sh
+++ b/livecd.sh
@@ -395,6 +395,8 @@ Pin-Priority: 550
     if [ "$FS" = "ubuntu-moblin-remix" ]; then
 	chroot $ROOT apt-get update
 	chroot $ROOT apt-get -y --force-yes install ubuntu-moblin-ppa-keyring
+	# workaround LP #442082
+	rm -f ${ROOT}var/cache/apt/{,src}pkgcache.bin
     fi
 
     # In addition to the ones we got from apt, trust whatever the local system