Still having related problems. Can't validate or upload my app. Seeing "The request timed out" in Xcode for both "Validate..." and "Upload to App Store..." actions. Here is the Console entry:
12/10/15 9:27:58.795 AM Xcode[1789]: DeveloperPortal: Completed request 40073556-8D0A-49BE-868C-881E48E76388 (failure): Error Domain=NSURLErrorDomain Code=-1001 "The request timed out." UserInfo=0x7fad6a9eb0b0 {NSUnderlyingError=0x7fad6d35adc0 "The request timed out.", NSErrorFailingURLStringKey=https://developerservices2.apple.com/services/QH65B2/viewDeveloper.action?clientId=XABBG36SBA, NSErrorFailingURLKey=https://developerservices2.apple.com/services/QH65B2/viewDeveloper.action?clientId=XABBG36SBA, NSLocalizedDescription=The request timed out.}
But I can successfully hit servers:
$ curl "https://developerservices2.apple.com"
{"responseId":"8ecb2d53-d4d6-48c2-9374-7b7f63d531e4","resultCode":1100,"resultString":"authentication.failed","userString":"Your session has expired. Please log in.","creationTimestamp":"2015-12-10T14:33:56Z","protocolVersion":null,"requestId":null,"userLocale":"en_US","requestUrl":"https://developerservices2.apple.com/","httpCode":200}
Anyone else still having this problem?