The problem saga-qgis in ubuntu seems solved (thanks to johan) Just update the system with the repository of ubuntugis unstable and it should work. See: http://gis.stackexchange.com/questions/71821/saga-2-0-8-and-gqis-2-0-1-on-ubuntu-13-04/72376?noredirect=1#72376 Cheers Matteo