SEMINAR      Tuesday, 25 January 2005 - h. 16:30  Auditorium B. Touschek     G. Violini (U. Calabria) KN physics at intermediate, low and unphysical energies revisited Abstract     The recent debate on pentaquark has revived interest for KN physics, putting evidence on its much lower knowledge than pion nucleon physics.     The problems which are still open, and the experimental perspectives of existing and projected machines are discussed.