hi! the /usr/ports/sysutils/apc-upsd is dated as 19991128 which is a bit old.
the http://www.apcupsd.org/ is activly developed. the lastest release was on 20100116. (with GPLv2 license) I am using it without any problems at home with my APC Back-UPS RS550 which is connecting to the machine with a USB cable. any other machine can receive the status info through the network so only one machine needs a direct link. should we have a port from it? i'd be happy to work on it. what do you think?