**FILE** An Alltel Corp., sign is displayed on one of the buildings at the company's headquarters in Little Rock, Ark., in this May 21, 2007 file photo. Alltel shareholders were scheduled to vote Wednesday, Aug. 29, 2007 on a $24.7 billion buyout offer by a pair of private investment groups that want to take the nation's fifth largest wireless operator private. (AP Photo/Danny Johnston, file)