samba - Apr 2007 - Samba-3.0.24 patched drive mapping prompting for username/password and fails..

This weekend upgraded a Solaris 9 system which has been using
samba-3.0.10 for a while without any problems to version 24 with patches
applied.  

When Samba-3.0.10 is running, can browse to share as well as map it
without getting any prompts or failures.  Under 3.0.24, get prompted for
username and password and still not allowed into share. User is on
Windows XP professional and AD server is Windows 2000 Server.

[global]
   hide unreadable = Yes
	workgroup = adtestnetbios
	realm = adtest.com
	security = ADS
	encrypt passwords = yes
	log level = 4
	idmap uid = 10000-35000
	idmap gid = 10000-35000
	winbind enum users = yes
	winbind enum groups = yes
	template homedir = /u/%U
	template shell = /bin/csh
	winbind use default domain = yes
	winbind cache time = 600
   client schannel = no  
   username map = /usr/local/samba/lib/users.map

[u]
  comment = Monarch's u directory
  path = /u
  public = no
  create mask = 0660
  read only = No
  directory mask = 0770
  browseable = Yes
  force group = group
  valid users = root,monarch,@"xyzusers"

[public]
  comment = Monarch's public directory 
  public = no
  path = /u/public
  read only = No
  create mask = 0660
  directory mask = 0770
  browseable = Yes
  force group = group
  valid users = root,monarch,@"xyzusers"

[user]
  comment = User's home directory
  path = /u/%U
  writable = yes
  public = no
  create mask = 0660
  directory mask = 0770
  browseable = Yes
  force group = group
  valid users = root,monarch,@"xyzusers"

[stock]
  comment = Monarch's stock directory
  path = /u/stock
  read only = no
  public = no
  create mask = 0660
  directory mask = 0770
  browseable = Yes
  force group = group
  valid users = root,monarch,@"xyzusers"