I'm not too sure what the problem is, but I suppose it could be:
a) something in the songs that are triggering a... firmware misfunction? Or hard drive misfunction? Like... a virus, for the iPod? o.O
b) A bad harddrive sector. Which, given the amount of falls this iPod has endured (no less than 10), could be a possibility. However, this doesn't explain why it refuses to boot after freezing up like that (freezing up = no buttons work, aside from holding menu+play to reboot)
c) Death related to the clock..? Or some other periodic something or other? So when it reaches, oh, say, 2 AM, it dies. Like a bomb. O.o
...I dunno. This annoys me. I think I can fix it following the steps (abbreviated ones, anyways - maybe just dumping the firmware onto the firmware sector and letting the iPod reflash itself.) but this would be a pain in the ass if I have to do this every few days. Argh.
Well, just ran the hard drive check, and it came out clear.
...Oh, well, that was interesting. It rebooted, I saw the apple icon, then it disappeared. But the hard drive's definitely still spinning. I wish there was some way to see what it was doing, or see what it was stuck at. :: sigh::