Yep, It's been down since 5:58 PDT according to their status page and Tweets. Status page was throwing 500's in the first 10 minutes of outage but seems to have recovered.
It's still doing that.
Serving static images (and who knows what else) with "Cache-Control: max-age=1" is probably not a good idea if a million frustrated customers are going to reload your status site every minute.