Here I am posting again, still noob and still unable to sort out myself where is my problem.
I have a Pogo-P24 with the root-fs as from ArchLinuxARM-2012.12-oxnas.tar.gz (latest), updated by pacman-syu. Installed a couple of tools such htop and sudo and changed the device name, but except this neglectable changes it IS virtually a "vanilla" pogo arch.
The problem (I believe) is located in the triangle: transmission - rc.d - systemd.
I installed transmission-cli. Followed the wiki instructions to set up a "torrent" user to run the daemon. At first I tried in /etc/conf.d/transmissiond but it did not work. All I can say is that:
$this->bbcode_second_pass_code('', '
[root@sufferance ~]# rc.d start transmissiond
:: Starting Transmission Daemon [DONE]
[root@sufferance ~]# rc.d stop transmissiond
:: Stopping Transmission Daemon [FAIL]
')
and no transmission process spawn in the processes list (I mean: after the start command, and this make it obvious why stop fails).
So i tried the systemd version of the wiki instructions.
$this->bbcode_second_pass_code('', '
systemd-tmpfiles --create transmission.conf
')
goes on quietly.
But then both:
$this->bbcode_second_pass_code('', '
[root@sufferance ~]# systemctl stop transmission
Failed to get D-Bus connection: No connection to service manager.
')
and
$this->bbcode_second_pass_code('', '
[root@sufferance ~]# systemctl start transmission
Failed to get D-Bus connection: No connection to service manager.
')
fails.
Systemd is already installed
$this->bbcode_second_pass_code('', '
[root@sufferance ~]# pacman -Q systemd
systemd 196-2
')
so I thought all should be fine with it but
$this->bbcode_second_pass_code('', '
[root@sufferance ~]# cat /proc/1/comm
cat: /proc/1/comm: No such file or directory
')
I also tried to re-install sustemd, but nothing changed.
So, if someone could kindly show me where should I direct my attention in this mess...

Many thanks to everyone for the time spent reading my long post!!