Scott Bloch, the former Lawrence attorney who now is director of the U.S. Office of Special Counsel, is facing allegations that he improperly deleted computer files, according to the Washington Post._Recently, investigators learned that Mr. Bloch erased all the files on his office personal computer late last year. They are now trying to determine whether the deletions were improper or part of a cover-up, lawyers close to the case said.__Bypassing his agency’s computer technicians, Mr. Bloch phoned 1-800-905-GEEKS for Geeks on Call, the mobile PC-help service. It dispatched a technician in one of its signature PT Cruiser wagons. In an interview, the 49-year-old former labor-law litigator from Lawrence, Kan., confirmed that he contacted Geeks on Call but said he was trying to eradicate a virus that had seized control of his computer._