thanks whaus, it works now !
My articles and menu didnt work since updated to 3.9 this morning !
Object of class WP_Post could not be converted to string in …/blog/wp-content/plugins/qtranslate/qtranslate_core.php on line 455
return $before.strftime($format, $date).$after;
simply removing the “$before.” in qtranslate_core.php file from the last line quoted above and with it removed, qtranslate works here with WP 3.9 !
Cya