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Looks like the "3GB ISOs" link isn't much use at the moment - Microsoft have been swamped by demand and have pulled the download! If ever there was a hugely strong case for using BitTorrent in a legal way, this is it surely? Stupidity on the part of MS there for not offering a BT download of a 3GB ISO...
Also note that the second link *requires* a Windows Passport login, which is a pathetic pre-requisite for a free download.