inability to configure pt_br abnt style keyboards

There is no option during the install from the selection of Brazilian keyboard layouts to correctly configure pt_br abnt and abnt2 style keyboards. Leading in my case to backslash not working which is rather problematic.

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: keyboard-configuration 1.57ubuntu21
ProcVersionSignature: Ubuntu 3.0.0-7.8-generic 3.0.0
Uname: Linux 3.0.0-7-generic i686
Architecture: i386
Date: Fri Jul 29 00:32:03 2011
EcryptfsInUse: Yes
InstallationMedia: Ubuntu 11.10 "Oneiric Ocelot" - Alpha i386 (20110728)
PackageArchitecture: all
ProcEnviron:
 LANGUAGE=pt_BR:pt:en
 PATH=(custom, no user)
 LANG=pt_BR.UTF-8
 SHELL=/bin/bash
SourcePackage: console-setup
UpgradeStatus: No upgrade log present (probably fresh install)