time leap not accurate

When leaping to a absolute time there is an inaccuracy:

yuri@prl:~/repo/opendnssec/enforcer-ng/src$ ./ods-enforcer time leap --time 2010-08-01-12:00:00
Using 2010-08-01-12:00:00 parameter value as time to leap to
There are 2 tasks scheduled.
It is now Thu Apr 17 16:03:03 2014
Leaping to time Sun Aug 1 14:00:00 2010
Waking up workers
time leap completed in 0 seconds.

yuri@prl:~/repo/opendnssec/enforcer-ng/src$ ./ods-enforcer time leap --time 2010-11-01-12:00:00
Using 2010-11-01-12:00:00 parameter value as time to leap to
There are 2 tasks scheduled.
It is now Thu Apr 17 16:03:12 2014
Leaping to time Mon Nov 1 13:00:00 2010
Waking up workers
time leap completed in 0 seconds.

locale and dl savings seem to play a role.