On version 3.2.4, with a PDC/LDAP Samba setup with the minimal LDAP entries, "wbinfo -u" only display the Guest account and not the Administrator account.
I can still set a password for Administrator (with smbpasswd) and use it for administration (with net rpc) but it's not displayed in wbinfo.
Either wbinfo should display it or it shouldn't display the Guest account.
you say nothing about your config, you might want to attach the complete samba/ldap/whatever config to make this one reproducable
Cannot reproduce and the reporter does not provide enough information.
Closing out bug report.
Please re-open is it's still an issue in 3.2.11.