As I mentioned in my Solve an obscure Back to my Mac issue blog entry, it’s possible to configure OS X’s time servers to be a bit more robust than just relying on one time server—if that server goes ...
I'm kind of curious about the actual accuracy of NTP. When I try to research the topic I hear stuff like "stratum 1 is fractions of a millisecond and stratum 2 is within 100ms" and then I see people ...