I don't have a serial port on my Shuttle PC, therefore I bought a Belkin USB -> serial converter.
The converter is recognzied on /dev/ttyUSB0
I've edited /etc/init.d/irblaster to use ttyUSB0, but the script fails when it trys to setup the IRQ and stuff with setserial

root@mythtv:/etc/irblaster# /etc/init.d/irblaster start
Cannot get serial info: Invalid argument
FATAL: Error inserting lirc_serial (/lib/modules/2.6.15-chw-2/misc/lirc_serial.ko): Device or resource busy
##################################################
## UNABLE TO DETERMINE WHICH DEVICE lirc_serial ##
## is using. ##
##################################################

Is anybody using a USB to serial converter with the IRBlaster from irblaster.info?