wow thats exactly what i was gonna say.....wierddo this:
1. switch the hold from on to off
2. hold down the center button and "menu" button for up to 10 seconds until you see the "apple" logo, then just turn it back on.
(im not sure if it's the middle and menu button or middle and play/pause button) try both and see
Have the exact same one. Love it and has never frozen.My Sansa e260 has frozen once in like 6 months ...