SBI top job: Ball in PMO courtTamal Bandyopadhyay / Mumbai January 30, 2006Even four weeks after the retirement of State Bank of India Managing Director K Ashok Kini, the government has not been able to identify his successor. In the face of intense lobbying by various pressure groups, Finance Minister P Chidambaram has not put his stamp of approval on the file cleared by the appointments committee. Instead, he has sent it to the Prime Minister