I, too, would get an authentication error using a 10.1 user after upgrading to 10.2. Simply changing the password didn't work for me. It appears jaguar stores SMB passwords in /var/db/samba/hash with a file for each logname. This directory did not exist until AFTER I added a user with "Allow user to log in from Windows" checked.

I then disabled the check box for Windows login for the 10.1 user, saved, then re-checked it, saved again, and I now have a hash file for the old user.

I tested authentication using:

smbutil view //localhost

Windows 2000 could mount CJL's home drive WITHOUT changing to clear-text passwords. This is a major improvement over the last time I tried to integrate SAMBA and Windows.

The following also worked:

C:\> NET USE LPT1: \\192.168.0.5\HP_LaserJet_2200 /USER:CJL
Entered Password
C:\> DIR > LPT1:

Viola! Directory listing printed on my shared jaguar printer. Happy day since that's the only laser in the house. The only change I made to enable shared printing was the [global] "printing = cups" line.