The leap second has had been a problem for Java apps (389-console for me) and apparently some ruby apps (seems like puppet ((can't prove it)) ). I found the common fix is to just set the date based on the current date as shown here.
Doing this on all the machines, a single line with func.
func \* call command run 'date; date $(date +%m%d%H%M%C%y.%S); date'
The only thing to remember here is that $(something) is better than `something`, since the shell will do that locally first if I used backticks. And of course single quotes are better than doubles...
After running that, all the machines are happy again.