I just installed ntp-4.2.4p5 with the nmea patch and this configure: ./configure --disable-all-clocks --disable-parse-clocks \ --enable-NMEA --enable-LOCAL-CLOCK and it segfaults. Any clues? the relevant portion of my ntp.conf looks like this: server 127.127.20.0 prefer minpoll 4 fudge 127.127.20.0 refid GPS flag3 1 flag2 0 time1 0.0