"forget new packages" broken since multiarch is enabled

[Loïc Minier]

Hi

Since I've created a/etc/dpkg/dpkg.cfg.d/multiarch file with:
    foreign-architecture i386
per https://lists.ubuntu.com/archives/ubuntu-devel-announce/2011-August/000886.html and ran apt-get update, I'm seeing thousands of new packages and pressing "forget" will remove them from the UI, but they reappear when I restart aptitude.

It seems aptitude's new packages tracking is confused by the multiple architectures being available.

Cheers,

ProblemType: Bug
DistroRelease: Ubuntu 11.10
Package: aptitude 0.6.4-1ubuntu2
ProcVersionSignature: Ubuntu 3.0.0-8.11-generic 3.0.1
Uname: Linux 3.0.0-8-generic x86_64
Architecture: amd64
Date: Thu Aug 18 16:47:55 2011
ProcEnviron:
 LANGUAGE=fr_FR:fr:en_GB:en
 PATH=(custom, user)
 LANG=fr_FR.UTF-8
 SHELL=/bin/zsh
SourcePackage: aptitude
UpgradeStatus: Upgraded to oneiric on 2009-12-07 (618 days ago)