Taliban warns Poland on troops for Afghanistan WARSAW (Reuters) - Poland is investigating a warning by Taliban rebels against sending more troops to beef up its tiny force with the NATO-led mission in Afghanistan, the PAP news agency reported on Saturday. "Such information appears on the Web, and our special services are naturally investigating, but nothing serious is happening," PAP quoted Prime Minister Jaroslaw Kaczynski as saying. He was responding to a report in the newspaper Zycie Warszawy that a warning by the Taliban was posted on a Web site operated by Russia's Chechen separatists. "We appeal to the Polish...