Error on rendering of accentuated letters in some french language files

Hello,

after installing the last FRENCH language files (from 2014-02-25 15:32:40)
i have some errors on ACCENTUATED LETTERS
(discussion... title... not on profile app or kunena app... only some languages files)

http://awesomescreenshot.com/0982es6185
http://awesomescreenshot.com/01f2es35f1
http://awesomescreenshot.com/0942es3i22


AND
nothing in the discussion notification bubble : blank !
http://awesomescreenshot.com/0242es5d1b


Loïc