still have my ipod photo 30gb from 2005. works fine most of the time until I need to restart it which requires me to hit it a few times so it will boot up.
I bought a iPod 40gb for my mom two years ago and it died on her 5 months later.
I have a fourth gen ipod. It froze up and I took it to the Apple Store. They took it in the back and got it going, while saying that it would die permanently in a couple months. That was two years ago. Essentially the arm on the drive sticks on occasion (maybe once every month). I pop it open and whack it while restarting to jar it loose. Eventually I'll pay $25 for a new drive through ebay. I stubbornly refuse to let it die.