Samba Error: NT_STATUS_LOGON_FAILURE

I had problems to access the samba share on linux box from a pc. Then I
conducted the following test.

Use a minimal /etc/samba/smb.conf, as follows,

[global]
workgroup = suburbs
netbios name = hornsby
[share1]
path = /tmp


on the local linux box, as root:

root$>smbpasswd -a larry
New SMB password:
Retype new SMB password:

(successful)

Test: as a user, larry

larry$>smbclient -N -L hornsby
Anonymous login successful
Domain=[SUBURBS] OS=[Unix] Server=[Samba 3.0.14a-2]

Sharename Type Comment
--------- ---- -------
share1 Disk
IPC$ IPC IPC Service (Samba 3.0.14a-2)
ADMIN$ IPC IPC Service (Samba 3.0.14a-2)
Anonymous login successful
Domain=[SUBURBS] OS=[Unix] Server=[Samba 3.0.14a-2]

Server Comment
--------- -------
BURWOOD
HORNSBY Samba 3.0.14a-2

Workgroup Master
--------- -------
SUBURBS HORNSBY


larry$>smbclient //hornsby/share1
Password:
session setup failed: NT_STATUS_LOGON_FAILURE


any help?