samba - Nov 2004 - Unable to see Users for ACLs with 104,000 users?

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

I have a machine that is successfully joined to a ADS domain with 104,000
users. However, when I go to look at the ACLs for a file in a share, I
cannot select the domain when adding users, so that I only see the
default setup. Is there anything I need to do to enable this? It seems
to work fine in the test setup with only 1000 users.

wbinfo -u lists 104,000+ users
getent passwd works

See attached screenshot for more information.
-----BEGIN PGP SIGNATURE-----
Version: GnuPG v1.2.6 (GNU/Linux)
Comment: Using GnuPG with Mozilla - http://enigmail.mozdev.org

iD8DBQFBkqPJ2dxAfYNwANIRArvJAKCjhDiNNyYERm7ieufgigvcBitKUwCfcoPW
kAZS4/a67AqmlfyaU6xj6Fo=cKnv
-----END PGP SIGNATURE-----