samba - Jan 2010 - NTLMV2(VISTA Client) not working with Samba 3.0.35

Hi,

Using Solaris 9 and Samba 3.0.35 with below configuration.

[global]
	workgroup = AMERICAS
	server string = XXXXXXXXXXXX
	security = SERVER
	password server = XXXXXX,XXXXXXxx
	username map = /apps/samba/users.map
	lanman auth = No
	ntlm auth = No
	client NTLMv2 auth = Yes
	client lanman auth = No
	client plaintext auth = No
	log level = 10
	log file = /var/samba/log/log.%u
	max log size = 50
	name resolve order = host lmhosts wins bcast
	load printers = No
	printcap name = /dev/null
	disable spoolss = Yes
	show add printer wizard = No
	os level = 5
	lm announce = No
	preferred master = No
	local master = No
	domain master = No
	dns proxy = No
	create mask = 0644
	oplocks = No

Problem: VISTA users are not able to logon as security policy set to
"NTLMV2 responses only". Company's policy would not allow me to
change it.

Any help will be appreciated.

Regards,
Gandhi