Investors found some encouragement in signs that Japan's slumbering banking sector was stirring, and was finally prepared to shake up its moribund infrastructure. Shares in Mizuho Holdings, the country's largest lender, jumped almost 4% on reports that it was getting set to slash salaries of its 30,000 workers and consolidate its sprawling branch network. Other bank shares followed Mizuho up on hopes that its move would be just the first dose of reality to be administered into the system.