I doubt this is a co-incidence – I’ve been seeing 503 errors on some of my reports:
<?xml version="1.0" encoding="utf-8"?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html> <head> <title>503 first byte timeout</title> </head> <body> <h1>Error 503 first byte timeout</h1> <p>first byte timeout</p> <h3>Guru Mediation:</h3> <p>Details: cache-dca17720-DCA 1502649587 654081008</p> <hr> <p>Varnish cache server</p> </body> </html> -Nigel