diff -Nru live-build-3.0~a24/debian/changelog live-build-3.0~a24/debian/changelog
--- live-build-3.0~a24/debian/changelog	2012-04-18 12:10:05.000000000 +0000
+++ live-build-3.0~a24/debian/changelog	2012-04-18 20:55:29.000000000 +0000
@@ -1,3 +1,9 @@
+live-build (3.0~a24-1ubuntu31) precise; urgency=low
+
+  * build-wubildr.patch: Switch wubi from ext3 to ext4 (LP: #859552)
+
+ -- Adam Conrad <adconrad@ubuntu.com>  Wed, 18 Apr 2012 14:54:48 -0600
+
 live-build (3.0~a24-1ubuntu30) precise; urgency=low
 
   * ubuntu-kernel-img-conf.patch: On some architectures (notably powerpc),
diff -Nru live-build-3.0~a24/debian/patches/build-wubildr.patch live-build-3.0~a24/debian/patches/build-wubildr.patch
--- live-build-3.0~a24/debian/patches/build-wubildr.patch	2012-02-23 16:25:58.000000000 +0000
+++ live-build-3.0~a24/debian/patches/build-wubildr.patch	2012-04-18 20:53:53.000000000 +0000
@@ -6,7 +6,7 @@
 ===================================================================
 --- /dev/null
 +++ b/examples/hooks/ubuntu_binary_build-wubildr.sh
-@@ -0,0 +1,36 @@
+@@ -0,0 +1,34 @@
 +#! /bin/sh
 +set -e
 +
@@ -19,9 +19,7 @@
 +# in the location that losetup knows it is; however, in a chroot this file wont
 +# be present, so we need to make it so by the magic of bind mounts:
 +mkdir -p "ubuntu/disks"
-+# FIXME: swap these next two lines around when the buildds can handle ext4:
-+# mv "binary/boot/filesystem.ext4" "ubuntu/disks/root.disk"
-+mv "binary/boot/filesystem.ext3" "ubuntu/disks/root.disk"
++mv "binary/boot/filesystem.ext4" "ubuntu/disks/root.disk"
 +mount -o loop "ubuntu/disks/root.disk" "$CHROOT"
 +# Save the directory structure mkdir created, so that it can be removed later.
 +REMOVE="$(mkdir -pv "$CHROOT$PWD" | head -n1 | sed "s,.*\`\(.*\)',\1,")"