I18n Rails I18n

If I have an yml file like this:

hu:
activerecord: models: user: one: "Felhasználó" other: "Felhasználók"

ree-1.8.7-2010.02 > User.model_name.human( :count => 2 )
=> "Felhasználók"

but:

ree-1.8.7-2010.02 > User.model_name.human
=> "Felhasznál\303\263"

I tested many ways, if an 'ó' character is the last in the translated value, translation gives back an encoded version of the word. It gives back also, when I use I18n.t

I18n.t( 'activerecord.models.user' )
=> {:one=>"Felhasznál\303\263", :other=>"Felhasználók"}