Hi,
Yesterday, 5 July 2016 there was a period of read-only mode affecting
mostly Commons wiki, but also to some deletions on other wikis,
starting at 10:22 UTC. You have the details of the issue at:
<url:https://wikitech.wikimedia.org/wiki/Incident_documentation/20160705-commons-replication>
Regards,
--
Jaime Crespo
<http://wikimedia.org>