hi there,
When posting an external link on the group wall and click on it, the external content opens in a new window.
However, when adding a comment to the group wall post that contains a link to an external source, and the user clicks on it, the link opens in the same window. The only way back to jomsocial is to push the back button of the browser. Guess this is not the way it's meant to work.
smokingban