From Remote-Learner, our Moodle host:
Dear Valued Client,
In order to increase the resilience and reliability of our cloud platform we will be conducting network maintenance on 7/12/2014 between 12 a.m. and 4 a.m., EDT. During most of this period your site will be operational, but there may be short periods of connection loss to the internet.
Remote-Learner Technical Support