Their status site is running fine altho it's not reporting errors: https://status.heroku.com/
Their Helpdesk is down: https://api.heroku.com/helpdesk/login?timestamp=1341025835&#...
Devcenter is down: http://devcenter.heroku.com
AWS isn't reporting any errors: http://status.aws.amazon.com
8:21 PM PDT We are investigating connectivity issues for a number of instances in the US-EAST-1 Region.