The dashboard page points to a non-https version of the Google jsapi which causes an SSL warning if you're using https.

It appears they include an https version which should probably be used by default: https://www.google.com/jsapi

[root@priv foreman]# grep -ri 'jsapi' ./
./app/helpers/application_helper.rb:      "<script src=http://www.google.com/jsapi></script>" 
./vendor/plugins/google_visualr/README.rdoc:  <script src='http://www.google.com/jsapi'></script>