My first two entries are not blank, but any "custom" fields don't get exported to the iPod. For example, all "Home" addresses show up, but anytime that I've clicked to "Add custom field", such as "School Address" or "Birthday", it has never shown up on the iPod.
This has been a problem since the day I got my 3rd Gen 30GB iPod. I thought the new iPod operating software would have fixed it, but it hasn't, nor has the latest version of iSync.
-Josh