All,
The Technical Operations team noticed abnormal network package losses sometime after yesterday's 'leap second' switch (midnight UTC). While it does not seem to impact the site availability at this moment, it is a concern. We are still not sure if is even related to the 'leap second' switch yet.
Leslie has opened a ticket with our network equipment provider and together with Mark, they have been working with them to pinpoint the problem since this morning. It is possible that they might induce some latency/issue during the troubleshooting process.
If you do experience anything abnormal, please let us know (email to ops@wikimedia.org or find us at the #wikimedia-operations IRC channel).
Thanks, CT