Ok, here's what I did:

1. Modifying non-front-page nodelets, so that I can see my changes immediately.
2. Uncheck all the nodelets. Submit. The nodelet display does not change.
3. Check "Chatterbox". Submit. Now only the chatterbox node appears. So far so good.
4. Check "Sections". Submit. The Sections nodelet appears above the chatterbox. Ok, I think, maybe it adds them in reverse order.
5. Check "Other users". Submit. The Other users nodelet appears below the chatterbox. Uh-oh.
6. As I check other nodelets and submit, they appear in their default order, not in the order I check and submit them.

What am I doing wrong?

Thanks,
--ZZamboni