Around 5:00 PM on the 27th January 2016 ET (22:00 on the 27th January 2016 GMT) an issue cropped up with Kiln on Demand. The problem impacted the backend service that provides users access to repositories via SSH, and resulted in intermittent failures for a subset of Kiln on Demand's users. HTTPS access to repositories was unaffected during this time for affected sites.
We have implemented additional monitoring for this and similar issues, so we can be aware of them much sooner. Sorry for the inconvenience; if this materially impacted your ability to do business, please let us know.