Menu Description

[mvlcek]

2. look for Mvlcek's i18n plugin in extend. It contains an advanced menu plugin, and should solve all your problems at once

I fear, it doesn't: it shows hierarchical menus, adds as class the slug name, adds the page title as title attribute, but does not add the description.

You could use the plugin's function return_i18n_menu_data and then create the appropriate HTML yourself, but as the description is not cached and not included in the output of that function, you would have to read all page files to get the description, which might be slow if you have lots of pages.