Catymag has pointed out on a previous thread that torrents are fine for a while but long term are not so good. Something to do with a drop off in the number of people sharing it. I've found it very worthwhile to simply subscribe to one of the file sites (Megaupload) and got this map today very quickly indeed, maybe 30-40 mins, over 30 year old copper wire ADSL. During the unlock process an error was reported for a file in Part 1 so I just downloaded that part again in a few minutes. It's installed just fine.

On an older ex-site there used to be a subscription facility where files could be accessed ad free and quickly. Now that would be a handy feature here.