I've been using samba for some years, it's really useful, thanks for developing it!
I noticed this when I added a user, it looked like it could be little clearer what was happening, mabye I didnt really need to know about the empty file /var/lib/samba/passdb.tdb etc..
# smbpasswd -a now3d
New SMB password:
Retype new SMB password:
Unable to open/create TDB passwd
pdb_getsampwnam: Unable to open TDB passwd (/var/lib/samba/passdb.tdb)!
TDBSAM version too old (0), trying to convert it.
TDBSAM converted successfully.
Added user now3d.
I am using Kubuntu 6.06 on amd athlon btw.
All the client tools nee to be overhauled.