I'm a Ubuntu PowerPC user who was recruited into checking to make sure this works as excepted. It doesn't.

Now archive.ubuntu.com is seen as a third-party software (the boxs are getting checks), and ports are added to the sources list which still doesn't work right ;-).

Here's the default sources.lists from my install, its good for reference.

I'm subscribed to the bug, I'll test any new fixes once they are uploaded to hardy-proposed.

# 
# deb cdrom:[Ubuntu-Server 8.04.1 _Hardy Heron_ - Release powerpc (20080703)]/ hardy main restricted

# deb cdrom:[Ubuntu-Server 8.04.1 _Hardy Heron_ - Release powerpc (20080703)]/ hardy main restricted
# See http://help.ubuntu.com/community/UpgradeNotes for how to upgrade to
# newer versions of the distribution.

deb http://ports.ubuntu.com/ubuntu-ports/ hardy main restricted
deb-src http://archive.ubuntu.com/ubuntu hardy main restricted

## Major bug fix updates produced after the final release of the
## distribution.
deb http://ports.ubuntu.com/ubuntu-ports/ hardy-updates main restricted
deb-src http://archive.ubuntu.com/ubuntu hardy-updates main restricted

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu
## team, and may not be under a free licence. Please satisfy yourself as to
## your rights to use the software. Also, please note that software in
## universe WILL NOT receive any review or updates from the Ubuntu security
## team.
deb http://ports.ubuntu.com/ubuntu-ports/ hardy universe
deb-src http://archive.ubuntu.com/ubuntu hardy universe
deb http://ports.ubuntu.com/ubuntu-ports/ hardy-updates universe
deb-src http://archive.ubuntu.com/ubuntu hardy-updates universe

## N.B. software from this repository is ENTIRELY UNSUPPORTED by the Ubuntu 
## team, and may not be under a free licence. Please satisfy yourself as to 
## your rights to use the software. Also, please note that software in 
## multiverse WILL NOT receive any review or updates from the Ubuntu
## security team.
deb http://ports.ubuntu.com/ubuntu-ports/ hardy multiverse
deb-src http://archive.ubuntu.com/ubuntu hardy multiverse
deb http://ports.ubuntu.com/ubuntu-ports/ hardy-updates multiverse
deb-src http://archive.ubuntu.com/ubuntu hardy-updates multiverse

## Uncomment the following two lines to add software from the 'backports'
## repository.
## N.B. software from this repository may not have been tested as
## extensively as that contained in the main release, although it includes
## newer versions of some applications which may provide useful features.
## Also, please note that software in backports WILL NOT receive any review
## or updates from the Ubuntu security team.
# deb http://ports.ubuntu.com/ubuntu-ports/ hardy-backports main restricted universe multiverse
# deb-src http://archive.ubuntu.com/ubuntu hardy-backports main restricted universe multiverse

## Uncomment the following two lines to add software from Canonical's
## 'partner' repository. This software is not part of Ubuntu, but is
## offered by Canonical and the respective vendors as a service to Ubuntu
## users.
# deb http://archive.canonical.com/ubuntu hardy partner
# deb-src http://archive.canonical.com/ubuntu hardy partner

deb http://ports.ubuntu.com/ubuntu-ports/ hardy-security main restricted
deb-src http://ports.ubuntu.com/ubuntu-ports/ hardy-security main restricted
deb http://ports.ubuntu.com/ubuntu-ports/ hardy-security universe
deb-src http://ports.ubuntu.com/ubuntu-ports/ hardy-security universe
deb http://ports.ubuntu.com/ubuntu-ports/ hardy-security multiverse
deb-src http://ports.ubuntu.com/ubuntu-ports/ hardy-security multiverse
deb-src http://archive.ubuntu.com/ubuntu/ hardy-proposed restricted main multiverse universe