Site Streams returning several errors



We have been unable to properly set up our site streams connections for some hours. We receive several errors like

HTTP Error 500: Internal Server Error, API message: Server overloaded, try again in a few seconds


Error: HTTP Error 404: Not Found, API message: Unknown URL. See Twitter Streaming API documentation at

Is there any issue affecting this service? We haven’t changed anything in our code and suddenly the streams got disconnected and started receiving all these errors when performing the usual recovery/retry process.