I also ran in to the Home button not working issue. I have not idea what changed with the button, but it would not work (from the outside) after the battery replacement & re-assembling. If you opened the iPod up, you could press the switch directly and it clicked & worked, but it seemed finicky. I ended up putting the tiniest dot of hot melt on the center of the switch (smaller than the switch 'dome', and thin too, maybe 0.6-0.7mm thick), re-assembled, and it works fine now.