Starting with the Newscoop 4.1.0 release, Sourcefabric will no longer be offering .deb packages for Ubuntu Maverick (10.10) and Ubuntu Natty (11.04).
This is because Canonical has an 18 month support window for desktop distributions, and no longer provides security updates for the packages in these distros (like SSH, Apache and PHP). In three months' time, we expect they will be ending support for Ubuntu Oneiric (11.10) too.
So, if you have any Newscoop servers running Maverick or Natty, please upgrade them to Ubuntu Precise LTS (12.04), so that these servers can enjoy security updates until April 2017. If you have a server running Oneiric, we recommend that you schedule an upgrade to Precise before April this year.
Ubuntu Lucid 10.04 LTS is unaffected by this announcement, since that is a server version and supported by Canonical until April 2015.