samba deb archives should use lzma or bzip2 compression

j@j-K64:/var/cache/apt/archives$ dpkg-deb -x samba-common-bin_2%3a3.6.3-2ubuntu1_amd64.deb ~/tmp
j@j-K64:~$ cd ~/tmp
j@j-K64:~/tmp$ tar cf data.tar usr
j@j-K64:~/tmp$ gzip --best --stdout data.tar > data.tar.gz
j@j-K64:~/tmp$ bzip2 --best --stdout data.tar > data.tar.bz2
j@j-K64:~/tmp$ lzma --best --stdout data.tar > data.tar.lzma
j@j-K64:~/tmp$ du -h data.tar*
18M data.tar
5,6M data.tar.bz2
6,0M data.tar.gz
3,0M data.tar.lzma
j@j-K64:~/tmp$

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: samba-common-bin 2:3.6.3-2ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-19.30-generic 3.2.11
Uname: Linux 3.2.0-19-generic x86_64
ApportVersion: 1.94.1-0ubuntu2
Architecture: amd64
Date: Mon Mar 19 16:04:46 2012
InstallationMedia: Kubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120228.1)
ProcEnviron:
 LANGUAGE=fr_FR
 TERM=xterm
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
SourcePackage: samba
UpgradeStatus: No upgrade log present (probably fresh install)