[Samba] pdbedit -e broken

[sambaz at gmx.com]

I am trying to export my samba password database using

pdbedit -e smbpasswd:smbpass

Mixed in with successful accounts are many errors:

Importing account for bob...ok
build_sam_pass: Failing attempt to store user with non-uid based user RID.
Importing account for fred...failed
Importing account for brian...ok

1) Why does it say "importing" when I am exporting?

2) How do I correctly export all of my data?

The failed users have nothing to distinguish them from the working users.

I am using Samba 3.4.7 on Ubuntu 10.04.4 LTS