Groups.drupal.org is a part of the drupal.org group of sites. Logging in on this site requires an account on the main drupal.org site. If you do not have an account on drupal.org, you will need to create one, log in over there, and then come back here where you should automaticall
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What about using Open Atrium
What about using Open Atrium for our Group site? take a look at the DesignforDrupal project site. Just putting it out there.