We are using a multiport controller, RLC-2, to control a couple of different repeaters. The app_rpt device is connected to one of the ports as a link, to provide services, so it's not really being used for much at the time being. I ran it on a laptop, and put it into the repeater rack. It promptly got hot and began taking HDD errors. With ACID/Linux it remounted the disc read only, and continued to operate for the next couple of weeks until I arrived without hosing anything up. App_rpt or asterisk itself has not ever caused an issue for me. If anything, choosing the right hardware makes the difference. Adam, KC2YQF