Leap second reminder

[Kevin Day <toasty () dragondata com>]

Just a reminder, at midnight UTC there's a leap second added to most  
time systems.

Some time systems will stop the clock at 23:59:59.999999 for 1  
second, some will display 23:59:60 for a second.

Since the last leap second (1998), "leap second aware" time keeping  
systems(NTP, GPS, etc) have become much more prevalent, so it's much  
more likely this time that applications and NTP sync'ed devices will  
see a leap second happen(rather than have them manually corrected  
later, or not corrected at all). But, I'm not too sure how well  
everyone has tested applications and devices for how they handle the  
clock stopping for a second OR an "invalid" time of 23:59:60.

If anyone sees anything die at 00:00:00UTC I'd be interested to know.

-- Kevin