I have just updated Firefox to 20.0.1 and it seems that several (if not all) of the features of version 2.1.2 that I am using, isnt working.
Also, I have noticed that for a few days now, before I update Firefox, some of the features werent working either. For example, in the "wars" page, I couldnt see the merc kills for each battle in the list, also I couldnt see the remaining time of any battle there exept of the CoD if I remember correctly.