Is this the download version or the one that comes with the iPhone 5, i'd imagine they're the same though?
Read some stories of 10 hour download times and then error messages saying download had failed, they must be trying to download via 3G for it to take that long and with errors. Never had any trouble updating android, i just go round to a friends house and download via his 20meg virgin connection with wifi, 10 mins and its done
When will people learn?