im having a similar issue, except my zune has the four number lock on it... so i cannt even unlock my zune to play music, it just is unresponsive. also weirdly, i let the battery drain completly dead, and when i plug it back in to charge up it will work perfectly UNTILL i press the center of the touch pad, which i have to do after i plug in my code... and as this was a replacement zune for the exact same problem, my warrenty is now up. any ideas?!?!
thanks!