I'm only going on a whim, but something about them screams to me those links are tainted. I may very well be wrong, but think twice before downloading.
Update: This is the message I just got in IE and Firefox when I tried to download "directly from the official source":
Certificate Error: Navigation Blocked
The security certificate presented by this website was issued for a different website's address.
Security certificate problems may indicate an attempt to fool you or intercept any data you send to the server.
We recommend that you close this webpage and do not continue to this website.
Click here to close this webpage.
Continue to this website (not recommended).
More information