
The file
http://habrahabr.ru/favicon.ico still remains on the Habrahabr server, but its address is no longer mentioned in the source code of the Habrahabr pages.
As a result, for example, my Firefox 16 stopped displaying the Habrahabr icon on the tabs spines with Habrahabr pages open in them.
It's a shame. I relied on the badges, looking around the tabs, and now they are faceless.