diff -Nru debootstrap-1.0.20ubuntu1.4/debian/changelog debootstrap-1.0.20ubuntu1.5/debian/changelog
--- debootstrap-1.0.20ubuntu1.4/debian/changelog	2011-10-24 17:58:57.000000000 +0200
+++ debootstrap-1.0.20ubuntu1.5/debian/changelog	2013-02-15 11:13:36.000000000 +0100
@@ -1,3 +1,12 @@
+debootstrap (1.0.20ubuntu1.5) lucid-proposed; urgency=low
+
+  * Fix Packages was corrupt warning on preseed install
+
+  Backport fix for Debian bug #618920 to solve LP: #1023069. Patch
+  slightly reworked to adapt to older codebase.
+
+ -- Louis Bouchard <louis.bouchard@canonical.com>  Fri, 15 Feb 2013 11:12:31 +0100
+
 debootstrap (1.0.20ubuntu1.4) lucid-proposed; urgency=low
 
   * Add (Ubuntu) precise as a symlink to gutsy (LP: #880926).
diff -Nru debootstrap-1.0.20ubuntu1.4/functions debootstrap-1.0.20ubuntu1.5/functions
--- debootstrap-1.0.20ubuntu1.4/functions	2009-09-24 20:43:44.000000000 +0200
+++ debootstrap-1.0.20ubuntu1.5/functions	2013-02-15 11:11:44.000000000 +0100
@@ -283,6 +283,7 @@
 		local typ="$(eval echo \${$(( $a+2 ))})"
 		local from
 		local dest
+		local iters=0
 
 		case "$typ" in
 		    bz2) from="$1.bz2"; dest="$2.bz2" ;;
@@ -298,24 +299,29 @@
 			dest2="${dest2%/*}/partial/${dest2##*/}"
 		fi
 
-		info RETRIEVING "Retrieving %s" "$displayname"
-		if ! just_get "$from" "$dest2"; then continue; fi
-		if [ "$md5" != "" ]; then
-			info VALIDATING "Validating %s" "$displayname"
-			if check_md5 "$dest2" "$md5" "$siz"; then
-				md5=""
+		while [ "$iters" -lt 10 ]; do
+			info RETRIEVING "Retrieving %s" "$displayname"
+			if ! just_get "$from" "$dest2"; then continue 2; fi
+			if [ "$md5" != "" ]; then
+				info VALIDATING "Validating %s" "$displayname"
+				if check_md5 "$dest2" "$md5" "$siz"; then
+					md5=""
+				fi
 			fi
-		fi
-		if [ -z "$md5" ]; then
-			[ "$dest2" = "$dest" ] || mv "$dest2" "$dest"
-			case "$typ" in
-			    gz)  gunzip "$dest" ;;
-			    bz2) bunzip2 "$dest" ;;
-			esac
-			return 0
-		else
-			warning CORRUPTFILE "%s was corrupt" "$from"
-		fi
+			if [ -z "$md5" ]; then
+				[ "$dest2" = "$dest" ] || mv "$dest2" "$dest"
+				case "$typ" in
+				    gz)  gunzip "$dest" ;;
+				    bz2) bunzip2 "$dest" ;;
+				esac
+				return 0
+			else
+				rm -f "$dest2"
+				warning RETRYING "Retrying failed download of %s" "$from"
+				iters="$(($iters + 1))"
+			fi
+		done
+		warning CORRUPTFILE "%s was corrupt" "$from"
 	done
 	return 1
 }
@@ -331,13 +337,6 @@
 		# http/ftp mirror
 		if wgetprogress -O "$dest" "$from"; then
 			return 0
-		elif [ -s "$dest" ]; then
-			local iters=0
-			while [ "$iters" -lt 3 ]; do
-				warning RETRYING "Retrying failed download of %s" "$from"
-				if wgetprogress -c -O "$dest" "$from"; then break; fi
-				iters="$(($iters + 1))"
-			done
 		else
 			rm -f "$dest"
 			return 1