Icon not appearing

Seems that there is a problem with the server that is hosting the various icons, as when you go to that site you get a 404.

As an example, when you go to view the following:

http://icons-ecast.wxug.com/i/c/k/chancesnow.gif

You get the following error:

404 – Not Found

Any help to fix this problem would be greatly appreciated!

Thanks!

http://ww.wp.xz.cn/extend/plugins/wunderground/