We're waiting on firefox to release a new version ... hopefully this month...

But the new version contains a heap of updates, which include config options to hide those boxes if you do not want to see them, more languages and more configurable options.

You'll know when you have the update though ... a popup will apear for you to configure the plugin - when that happens, you can remove the ublock rules since they wont be needed anymore :)

** Update: new version released - you should be good to go now :)