Wind Sensors: Is it iced up (frozen) or is is broken?

[TheGreenOne]

http://www.renewableenergyworld.com//assets/images/story/2010/5/6/9333-wind-sensors--is-it-iced-up-frozen-or-is-is-broken.jpg

More... (http://www.renewableenergyworld.com/rea/blog/post/2010/05/wind-sensors-is-it-iced-up-frozen-or-is-is-broken?cmpid=rss)