All Yandex resources have been down since 14:13 GMT. As you know, it is a biggest search engine in Russia, (yes, it is more popular, than Google in Russia) including search, mail, money, video, photo, free hosting, you name it. The reason is yet unknown.
Half an hour ago they twitted that network failure accrued and they are fixing it. <a href="http://twitter.com/#!/yandex/status/104552393110323201" rel="nofollow">http://twitter.com/#!/yandex/status/104552393110323201</a>