It's been going on for the last 5 days, and previously there have been unusual issues going back to the beginning of the month. Rest assured, this is not just a single outage in your area, but a sustained issue for the site - generally occurring and lasting between 19:00-24:00 (UTC-5/EST US). For those concerned, there's nothing we're able to do about it in the near-term. If you've any further information about downtimes, etc. please feel free to share it here.
I'll use this thread and/or the Cafe to post back updates whenever we have them. Many apologies for the inconvenience!