[Samba] problem with Samba upgrade

[anctop at hotmail.com]

Dear Sir,

Recently I've upgraded our Samba installation. After then I find that all 
WinXP workstations cannot logon to the server. The official HOWTO mentioned 
this problem and suggested resetting the SID using "net setlocalsid ....".
But this does not help in my case. The SID of our server has not been 
changed. So I've to go to every workstation for rejoin the domain. This is 
definitely a horrible experience. I would like to ask how to find out what's 
gone wrong, regarding server and/or workstation configurations.

Yours sincerely,
S.Y.C.