"There are indications that this file is untrustworthy" I got this message when I tried to download 3.7.16a and 3.7.13. Never got this before.
Perhaps somebody hacked into your site and intruded something malicios or something? Curiouce if everything is ok with those files and they are safe?
ps. Although it have not found anything specific, perhaps it's just its heuristic analysis or something. Still would like to hear a comment.