deb archives should use lzma compression

Anyway, firefox memory requirements for operating are in the same order of magnitude than the memory requirements for lzma decompression of firefox archives.

ProblemType: Bug
DistroRelease: Ubuntu 12.04
Package: firefox 11.0+build1-0ubuntu1
ProcVersionSignature: Ubuntu 3.2.0-18.29-generic 3.2.9
Uname: Linux 3.2.0-18-generic x86_64
AddonCompatCheckDisabled: False
AlsaVersion: Advanced Linux Sound Architecture Driver Version 1.0.24.
AplayDevices:
 **** List of PLAYBACK Hardware Devices ****
 card 0: I82801AAICH [Intel 82801AA-ICH], device 0: Intel ICH [Intel 82801AA-ICH]
   Subdevices: 1/1
   Subdevice #0: subdevice #0
ApportVersion: 1.94.1-0ubuntu2
Architecture: amd64
AudioDevicesInUse:
 USER PID ACCESS COMMAND
 /dev/snd/controlC0: j 1466 F.... pulseaudio
BuildID: 20120313141247
CRDA: Error: command ['iw', 'reg', 'get'] failed with exit code 1: nl80211 not found.
Card0.Amixer.info:
 Card hw:0 'I82801AAICH'/'Intel 82801AA-ICH with STAC9700,83,84 at irq 21'
   Mixer name : 'SigmaTel STAC9700,83,84'
   Components : 'AC97a:83847600'
   Controls : 34
   Simple ctrls : 24
Channel: release
CurrentDmesg:
 [ 29.451973] init: plymouth-stop pre-start process (1063) terminated with status 1
 [ 495.570174] hrtimer: interrupt took 6070095 ns
Date: Tue Mar 13 21:41:39 2012
ForcedLayersAccel: False
IfupdownConfig:
 auto lo
 iface lo inet loopback
InstallationMedia: Kubuntu 12.04 LTS "Precise Pangolin" - Beta amd64 (20120228.1)
IpRoute:
 default via 10.0.2.2 dev eth0 proto static
 10.0.2.0/24 dev eth0 proto kernel scope link src 10.0.2.15 metric 1
 169.254.0.0/16 dev eth0 scope link metric 1000
IwConfig:
 lo no wireless extensions.

 eth0 no wireless extensions.
Plugins: Shockwave Flash - Lib=libflashplayer.so, Location=/usr/lib/flashplugin-installer
ProcEnviron:
 LANGUAGE=fr_FR
 TERM=xterm
 LANG=fr_FR.UTF-8
 SHELL=/bin/bash
Profiles: Profile0 (Default) - LastVersion=11.0/20120309125033 (Out of date)
RfKill:

RunningIncompatibleAddons: False
SourcePackage: firefox
UpgradeStatus: No upgrade log present (probably fresh install)
WifiSyslog:

dmi.bios.date: 12/01/2006
dmi.bios.vendor: innotek GmbH
dmi.bios.version: VirtualBox
dmi.modalias: dmi:bvninnotekGmbH:bvrVirtualBox:bd12/01/2006:svninnotekGmbH:pnVirtualBox:pvr1.2:
dmi.product.name: VirtualBox
dmi.product.version: 1.2
dmi.sys.vendor: innotek GmbH