FILE USA YAHOO ( FILES ) A handout photograph released by Yahoo Incorproated shows Microsoft CEO Steve Ballmer ( R ) signing a global search agreement with Yahoo ! CEO Carol Bartz at Yahoo ! ' s Sunnyvale headquarters in in Sunnyvale , California , USA , 29 July 2009 . Struggling online portal Yahoo has fired chief executive Carol Bartz , the company announced late on 06 September 2011 . EPA / YAHOO ! / HO HANDOUT EDITORIAL USE ONLY / NO SALES < 연합뉴스 모바일 앱 다운 받 기 > < 포토 매거진 >< 저작권자 ( c ) 연합뉴스 . 무단 전재 - 재배 포금 지 . >