Don't worry, utorrent shouldn't kill your computer unless you actually download things that contain malicious software n sturfff..
There could probably be a few things, but just a wild guess from my side is that you
1. Didn't install the maps correctly
2. Loose connection to the server as you load the map
If I were you, I'd get rid of the download you have, redownload it again with utorrent, let it finish the dl and get to 100%. once that's done, make sure you install the maps correctly (I don't know for sure, so ask someone it's working for).
Once installed, make sure you aren't using anything that uses your internet bandwidth such as IM programs, webb browser, or the utorrent program. Shut it off by right clicking the icon then exit.
And try to enter the map again.
If it doesn't work I'm not sure.
http://feral-heart.com/index.php?option=com_jfusion&Itemid=2&jfile=index.php&topic=7736.0That's always a good read.
Either way, I wouldn't know for certain since I didn't download these myself.