I used Cydia to download an app called Stealth MAC and when the installation process was completed I returned to the springboard, but there wasn't any icon. So I searched the web for some info on how to run the app, but found only the developers site http://www.telesphoreo.org. Since I'm not much of a hacker I still didn't understand what to do, except that it seemed like I needed Python and Setup Tools. So I installed them and there is where I am now. Any ideas on what to do to execute it? By the way I've found a .sh-file called smac.sh in /user/bin/, but I don't know if that file is of any interest.