I updated my NTP and NTP Monitor on my SBS server. At pretty random intervals the NTP daemon would crash. I was getting a pretty long run in most cases. I investigating the problem but I did not come up with any conclusions. I did notice that NTP did not run crash if I was not running the NTP monitor. So I reinstalled. The NTP monitor is a newer version while the NTP daemon is an older version(4.2a versus 4.2b). Otherwise everything works as expected.