MobileTerminal does not work for me. I have an iPhone 3GS running 3.1.2. I installed MobileTerminal from Cydia. But, everytime I run it, it shows the keyboard for about 1 second, then the keyboard disappears and I'm back at the springboard. I shut my phone down and restarted and still have the same problem. I uninstalled it, re-booted, re-installed and re-booted and it acts the same. What am I doing wrong?