Upgarde doesn't generate *.pacnew\*.pacsave files

Question

I've tried the following
user@arch:/$ find /etc/ -name "*.pac*"
find: `/etc/polkit-1/localauthority': Permission denied
find: `/etc/sudoers.d': Permission denied
user@arch:/$ sudo find /etc/ -name "*.pac*"
user@arch:/$ locate *.pac*
with no luck.
user@arch:/$ uname -a:
Linux arch 3.3.4-2-ARCH #1 SMP PREEMPT Wed May 2 18:28:42 CEST 2012 x86_64 Intel(R) Core(TM)2 CPU T5300 @ 1.73GHz GenuineIntel GNU/Linux
user@arch:/$ pacman -V
.--.                  Pacman v4.0.3 - libalpm v7.0.3
/ _.-' .-.  .-.  .-.   Copyright (C) 2006-2012 Pacman Development Team
\  '-. '-'  '-'  '-'   Copyright (C) 2002-2006 Judd Vinet
                       This program may be freely redistributed under
                       the terms of the GNU General Public License.
In other words pacman over writes my config files instead of saving a copy of the new ones.
How do I make it save a copy instead of overwriting the files?
cheers,

Answer 1

Yes, changes got overwritten.
On my other computers\laptops there is no problem... I couldn't find anything on man pacman that indicates this. could it be my pacman config is wrong somehow on this laptop? As far as I know I didn't do anything differently.
Could I be calling --nosave somehow on pacman by default?
The orginal=X, current=Y, new=Z (from man pacman) option in pacman doesn't seem to work properly.
This is for all package upgrades not only laptop-mode.conf.
I upgrade with yaourt -Syu