[Plugin: Jetpack by WordPress.com] klicking on a bar in sidestats leads to an unkwonwn site.

klicking on a bar in sidestats leads to an unkwonwn site (404)

occurs on:

http://www.bastianschick.de
http://www.bastianschick.com
http://www.gamesong.de

WordPress hosted at hosteurope.de servers.

http://wordpress.org/extend/plugins/jetpack/