Weird problem w/ user authentication

[John Twyman]

Dear all,

Further to my last email, here is the debug level 5 log for my 
authentication attempt.

[2000/05/09 09:48:38, 4] passdb/pass_check.c:pass_check(792)
   Checking password for user johnt (l=8)
[2000/05/09 09:48:38, 1] smbd/reply.c:reply_sesssetup_and_X(909)
   Rejecting user 'johnt': authentication failed
[2000/05/09 09:48:38, 3] smbd/error.c:error_packet(138)
   error packet at line 910 cmd=115 (SMBsesssetupX) eclass=2 ecode=2
[2000/05/09 09:48:38, 3] smbd/error.c:error_packet(143)
   error string = No such file or directory

The setup is a Solaris 2.6 box running Samba 2.0.6 with Win98 & Win98/SE 
clients.
This problem is localised to the one user, not to any specific desktop machine.

It is possible to use smbclient on the unix box itself to connect to samba 
shares, but (as described above) not from a Win98 desktop machine.

User authentication is done with unencrypted passwords and I haven't set up 
smbpasswd.

Regards,
John