Update 1.8b has a bug that is quite annoying if you make use of the HTML template replacement function of Meteohub. If you make use of this I recommend to install Update 1.8c.
http://www.meteohub.de/joomla/index.php ... &Itemid=29
As this update fixes just that, it is not necessary to do the update if you don't make use of this feature.
Meteohub Update 1.8c
Moderator: Mattk