I just had something interesting happen to my iPod Touch about 25 minutes ago (1G, 16GB, jailbroken). I was listening to music and pulled it out of my pocket, clicked the hold button and the icons were shaking, with X boxes in the upper left hand corner. Programs installed through Cydia or Installer were not in the icon menu. I locked it and then unlocked it, and it went away -- back to normal, in other words. Sooooo... what went on there?