Tested with the preseed file attached to the bug, only replacing /dev/sda by /dev/vda before loading it and running ubiquity from precise-proposed in automatic mode.
Installation worked properly, system post-install is up to date except for the kernel and hplip (that require dist-upgrade instead of safe-upgrade).
This was done using the original 12.04 install media (64bit).
Tested with the preseed file attached to the bug, only replacing /dev/sda by /dev/vda before loading it and running ubiquity from precise-proposed in automatic mode.
Installation worked properly, system post-install is up to date except for the kernel and hplip (that require dist-upgrade instead of safe-upgrade).
This was done using the original 12.04 install media (64bit).