Issues with Logitech Harmony

[IriDium]

I think it is just "listening" on the wrong device.

Try
sudo killall lircd; /usr/local/sbin/lircd --driver=default --device=/dev/lirc0

If nothing, restart xbmc.
If still nothing - then that's all I know.

---

You could have a look at LIRC_RPI

You need to add lirc_rpi to modules and create a Lircd.conf file