Bug: duplicate mission statement at the bottom of the group page
It seems there is bug in groups.drupal.org: a duplicate mission statement at the bottom of the page when the groups don't use the default image for the mission (that is, an alternative image, or no image).
On the other hand, there is not problem in the groups using the default image, like for example http://groups.drupal.org/groups-drupal-org .
Examples of affected groups:
http://groups.drupal.org/australia
http://groups.drupal.org/latin-america
http://groups.drupal.org/maintenance
http://groups.drupal.org/newspapers-on-drupal
http://groups.drupal.org/taxonomy
etc...
I'm not sure if we should open an issue on this bug, or this is a matter for this Maintenance group.


Issue on this bug
Since it's a bug, I've opened this issue:
Duplicate mission statement at the bottom of the group page
Workaround and additional bug
Until the bug is fixed, there is a workaround.
Also, while applying the workaround (new page as home page), we can see an additional bug: the image of the mission statement is visible only after you designate the new page as your group home page (with page URL in the root, not in a subdirectory), because the image URL is relative: files/images/... It should be /files/images/...
That is to say, the image is visible when using:
http://groups.drupal.org/latin-america
and not when using:
http://groups.drupal.org/node/725
or when editing the page (also with a different URL).
It seems to be a site-wide bug. I think fixing this by changing from files/images/... to /files/images/... should be easy for a g.d.o admin.