I was trying to update on a Windows Vista (Admin) laptop via lightening fast Wifi and I get [ Send Request ] errors.
It does work fine on XP+ but with a land connection (what's the word?).
That was the first time I tried updating via wifi, so I don't know if it is only that connection or all wifi connections.
It was sorta a one-time thing, so I don't think I'll be able to use that same laptop+internet connection again.