I had five DS units over the course of the system's life (a launch Phat, three Lites and a DSi), and each of them broke, in five different ways. My launch unit's touch screen stopped responding, which I used as an excuse to buy a DS Lite, whose hinge broke completely, severing one of the wires. That was out of warranty, so I bought another Lite, which had its top screen crack, and then I got a third Lite, which I replaced with a DSi while it was still working but later its touch screen cracked, and finally my DSi's shoulder button quit working completely, but luckily it was still under warranty and I got that fixed. Outside of the DS line, though, I've never had any issues with Nintendo hardware.