I am pretty sure something about the latest OS hoses Nethack, yes. Same thing here, and at least one other person has reported the same.

I did email the developer of the port to let him know and he responded he would look into it, though he said the program should not crash the 770.

With the fair amount of crashing I am seeing I wouldn't be surprised if it is OS related.

I sure miss my Nethack

But the better response from the 770 in general is worth both it's lack and the occasional spontaneous reboot...

cAPS