As your managed hosting provider, it is our responsibility to ensure the security of the sites you place in our care. We are making this update to inform you of an upcoming security maintenance that will affect your sites.
Beginning at 11PM Central Time on February 16th, 2016, we will apply OS-level security patches; the maintenance is expected to cause approximately 10 minutes of downtime, dependent on your server configuration, as services are gracefully restarted to take advantage of the applied patches. You can find more information around the specific security situation here https://duo.com/blog/critical-vulnerability-affecting-glibc-patch-immediately
We apologize for any inconvenience and appreciate your understanding.
Thank you for giving us the opportunity to serve you.