Anyone know why iTunes reloads random albums to iPod when syncing?

[IronWing]

When I sync my iPod iTunes will reload albums to the iPod that haven't changed in anyway since the last sync. This morning it reloaded 154 songs that were just fine. I guess it provides the iPod a new opportunity to lose the artwork but otherwise seems odd.

 

[destrekor]

Are these DRM tracks?

Typically DRM needs refreshed once every 30 days, so I'm guessing that is what is going on in your situation.