samba - Apr 2012 - issue with win7 access samba server running on AIX

hey all.  we are running samba 3.5.4 on AIX but when client upgrade to Win 7..
none of the client  on window can see the share drive on AIX.

the error said "window cannot access "servername" ..  i know it
is group policy causing the problem  and

once i took out "computer configuration -> windows settings ->
security settings -> local policies -> security options -> network
security:minimum security for NTLMSSP based client" to not defined.. it
started working..


unfortunate, it is group policy that we can't disabled it or changeing it
for everyone..

Do you guys have any idea where i can fix the problem?


thanks

ronald chu
Charles Schwab