Windows XP client cannot access samba shares

[Greg Brown]

I have a problem.  I have a netra T1 (Solaris 8 64bit) running samba
2.2.8a.  this server is not a PDC, it is just a client on the domain
sharing out a directory.  all the win98,win2k clients can access the shared
directory fine.  however the XP clients get a permission denied when
accessing the share.  it can see the system, however, when you try to click
on the shared directory (home) you get a network resource is unavailable,
permission denied, please contact your systems administrator.  I get these
on all the XP professional clients.  any help would be greatly appreciated.
below is a copy of my smb.conf file:

[global]
        workgroup = CATALYST
        null passwords = yes
        log file = /usr/local/samba/var/log.%m
        max log size = 50
        netbios name = catalyst
        netbios aliases = catalyst
        security = domain
        encrypt passwords = yes
        server string = Unix Server
        debug level = 4
        profile acls = yes
        domain logons = Yes


[Home]
        writable = yes
        browseable = yes
        comment = Home Directories
        path = /export/home
        public = YES
        guest ok = yes