Reddit , stemming from its use of the Cassandra database and programs written in Java (although Reddit may have also been affected by storm related power outages that also took place Saturday in the Northern Virginia area). Mozilla on leap second issues, stemming from Java. Mozilla's deployments of Hadoop, which heavily use Java, needed to be restarted. DataStax, which manages development of the open source Cassandra database, did not immediately respond to a request for comment.

The reservation system for Australian airline Quantas due to a leap second crash. also experienced uptime difficulties following the leap second.

The issue with Linux stemmed from , .

The ITU because of the problems they can cause IT systems.

The IDG News Service