Hm, I don't care about the color theme one way or another, but when I clicked 'Sign out' a popup appeared and said, "There is a request to the server pendin

Hm, I don't care about the color theme one way or another, but when I clicked 'Sign out' a popup appeared and said, "There is a request to the server pending. Are you sure?" I know what this means, but even then I have no idea what that specific request might be. I doubt the average gmail user has any clue whatsoever about this message. Not really something I'd expect from Google.