http://en.arabstoday.net/images/imguploads/2013/01/17/1_896125_Untitled-12.gif US telecom firm AT&T said Thursday it would take a $10 billion write-down on its fourth quarter earnings to cover accounting losses in its pension funds due to lower-than-expected interest rates. The number two US wireless carrier said a lowered estimation of what it will earn on assets resulted \"in an actuarial loss of approximately $12.0 billion,\" which will result in the $10 billion pre-tax writeoff.