Winbind Unmount Issues

[Will]

I'm running edubuntu 7.1 server, kerbos, and winbind.
 
I am using pam_mount for ltsp clients logging into the server.  It maps
their home directories just find, but does not unmount the folder when
they logout.  I'm at a loss at this point and require advice.  Thanks!
 
The following are my pam.d and pam_mount configuration:
 
# /etc/security/pam_mount.conf (the lines I changed)
smbmount /bin/mount -t cifs  //%(SERVER)/%(VOLUME) %(MNTPT) -o
"username=%(USER),uid=%(USERUID),gid=%(USERGID)%(before=\",\" OPTIONS)"
smbumount /usr/bin/sudo /bin/umount %(MNTPT)
volume * smbfs ncresa-file test ~/Documents - - -
 
# /etc/pam.d/sudo
auth    sufficient      pam_winbind.so
auth    sufficient      pam_unix.so use_first_pass
auth    required        pam_deny.so
@include common-account
 
# /etc/pam.d/common-session
session required        pam_unix.so
session required        pam_mkhomedir.so umask=0022 skel=/etc/skel
session optional        pam_mount.so
 
# /etc/pam.d/common-auth
auth    sufficient      pam_unix.so nullok_secure
auth    optional        pam_mount.so try_first_pass
auth    sufficient      pam_winbind.so try_first_pass krb5_auth
krb5_ccache_type=FILE
auth    required        pam_deny.so
 
# /etc/pam.d/common-account
account sufficient      pam_winbind.so
account required        pam_unix.so 
 
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://lists.ubuntu.com/archives/edubuntu-devel/attachments/20071227/202e3d8f/attachment.html>