According to the young man I talked to at Tech Support this morning, it is definitely a batch problem. Apparently, all the units were made in the same week, or maybe the same day, I don't remember which. Point is, it is definitely a batch problem.
I called Tech Support back this afternoon to see if I could get a range of serial numbers. They don't have that information at Tech Support. The young fella this morning said you can tell what week it was made. So if anyone knows how to crack a TomTom One 3 serial code, we could work from that.