FF: Reported Attack Page!
 

i've been seeing that for a few weeks with some sites... i thought these warnings were google originated.. but when i click "Why was this page blocked?" button, it sending me to yandex.ru...
i can't see anything related to yandex... add-ons, any options, settings etc...
so, yandex is default with ff or somehow i managed to mess with my ff settings?

Sounds like you are infected. Might want to get that checked with a boot scan.

force some scanners