Apologizes for lack of access

While the company was performing  configurations to the infrastructure of the online service, many users were unable to access Facebook today for approximately 20 minutes. At around 1:00 pm PST service returned to the US, Germany and other places after the short period of difficulty accessing the site. Some users are still having trouble accessing the service:

Earlier today we encountered an error while making an infrastructure configuration change that briefly made it difficult for people to access Facebook.