Alright guys, I updated my IPT 2g to OS 4.0 and as soon as I did the lock button (on top) quit working. I down graded back to 3.whatever and it still didn't work. 4.0 is un-jailbroken. Tried to JB it and the button still didn't work. 3.x was jailbroken both times. Any help would be great. I do have the auto lock at 1 min, but i would like the button to work!