Actually, it wasn’t down. Just the information was not displayed.

The reason is simple – after a prolonged migration to Atom MoBo, data crash in one of physical discs, loss of some MySQL databases, a new WordPress installation was missing the theme i’ve used. So, quick edit in ‘options’ table, replacing ‘option_name’ ‘template’ and ‘stylesheet’ with walue ‘default’ made the trick.
As you see, the blog is up and running again.