Comment 9 for bug 316780

netbook-remix.archive.canonical.com archive was updated in January
with security updates. We plan to update it again sometime in March to
coincide with the next major UNR update. An updated l-u-m will be part of that
update and has an even newer version of the Pouslbo driver than
referenced here, version 2.3.0.32L.0201.

We hope to push many of the UNR updates first to a proposed repo so folks can try it out before it is released. Don't know the exact date yet, but you can add the following to your sources.list to be sure to get the proposed updates when they become available:
deb http://netbook-remix.archive.canonical.com/ubuntu/ hardy-netbook-remix-proposed main universe multiverse restricted