Playlists won't stay random after transfer to iPod

Playlists set to random in iTunes won't stay random on my iPod. How can I fix this? [searched around and didn't see this exact issue addressed]

I've built a couple playlists (one smart, one regular) for my 5th Gen 30GB Video iPod and set them to random in iTunes. After I sync and disconnect my iPod the playlists are no longer in random order. They are in alphabetical order by album. In Settings, Shuffle is currently set to songs.

This hasn't always been a problem. It just cropped up recently, but I don't normally use a lot of playlists as I mostly listen to podcasts and audiobooks and just shuffle all songs when I want music.

What setting am I missing?