iPod keeps randomly crashing on sync

"What else you do have on you USB ports? Is it plugged into a non-powered hub?

I had a problem with an iPod Mini that would screw up randomly on sync. Moving it off the non-powered hub to the built in port on my computer fixed that problem."

"Try setting your iPod in Disk Mode, and running chkdsk /r (if you're on Windows) or using Disk Utility to repair the permissions / repair disk (if you're on OSX)

Once you've repaired permissions, can you do a restore and a resync, and if so, is performance better / more stable?"