[Samba] client not authorized

[Dave]

Hello,
    I have a CentOS 4.4 box acting as a print server with a cups backend and 
samba 3.2.4. I recently ran yum which updated both cups and cups-libs, but i 
do not think this is my problem. I've added windows drivers to the samba 
sharea and have in the past printed a test page to the printer. Now when i 
atempt to do this with a word document from a windows box, i am getting the 
error: client not authorized. It is showing me connecting to the print$ 
share as my user which have SePrintOperatorPrivilege, then i get the error 
from cups about the client not being authorized. Any help appreciated. Some 
urgency!
Thanks.
Dave.