Due to a Texas data center network issue, the service was not accessible between 11:14 AM EST and 11:32 AM EST. The NOC team is investigating the root cause of the problem and will post an update when new information is available.
*** UPDATE *** May 19, 2009
The problem was traced to a software failure in several of the routers of the data center. The NOC team is working with the vendor to ensure such a failure does not happen in the future.