By the way,
For that very reason (the freezing problem), I considered the new Rios - especially the 30s and the new rectangular one. They don't have hard drives, so there wouldn't be any skipping. The slightly larger, non-sport one has a media slot for upgrades and the 30s has an FM tuner. Plus, they are both so much cheaper that it would be less harrowing if they were to be dropped or scratched.
However, the iPod is the superior music machine and 5GB of music plus portable hard drive usage made the iPod my final choice.