Hi! I also had this this problem. The workaround is to remove /etc/irda.conf and then install the package. It looks like that the preinst script does not parse the old config in a proper way. Below I enclose my old /etc/irda.conf:
#irda.conf Version: 1.0 IRDADEV=irda0 DONGLE=nsc-ircc DISCOVERY="-s 1" ENABLE=yes # if you do not need to start irattach, set "no" thanks -- Serge -- To UNSUBSCRIBE, email to [EMAIL PROTECTED] with a subject of "unsubscribe". Trouble? Contact [EMAIL PROTECTED]