Every drush command I run hangs on wget. However, if I run wget outside of drush, it works just fine. I am behind an http proxy and suspect that's factoring into the problem. I don't understand why wget isn't looking at my http_proxy environment variable when run through drush.
Might this help... http://www.xandermar.com/blog/may-20-2014/using-drush-proxy ?
(sorry, I know this is more of a comment, but I don't have the points!)
If not, have you run the drush commend in verbose mode to get more info?