deleting all .directories (to search a solution for another bug of my hardy -> https://bugs.launchpad.net/ubuntu/+source/nautilus/+bug/196263) in my home have solved this bug
deleting all .directories (to search a solution for another bug of my hardy -> https:/ /bugs.launchpad .net/ubuntu/ +source/ nautilus/ +bug/196263) in my home have solved this bug