Whenever i play certain games (Ones i've noticed are the GBA emulator and tap tap dance), after playing them, and exiting to the springboard, my buttons do not work anymore. As in, hitting the top power button does not put the screen into standby mode, and the home button doesn't do anything. The only solution i can find for this is to hard reset it, which then the buttons work somehow. Can someone shed some light on this? Thanks a bundle.