Fannie Mae and Freddie Mac each lost much more in the third quarter of 2011 than during the previous three month period and more than one year ago as the two GSEs reported significant derivatives losses.On a combined basis, Fannie and Freddie lost $9.5 billion in the third quarter, compared to a $5.0 billion loss in the second quarter and $3.8 billion in losses during the same period a year ago.