Double logon issue with the social theme


I am using the theme Social with BP, WP (all up to date).

I have a strange issue with double login: Whenever someone try to log-in from the main page he transfers to WP login and only after he login again he finally arrives to the dashboard.

Can't we avoid the double login process?

II have removed the Social theme and replaced it with the default BP theme and the issue has been solved. Perhaps someone could fix it for the social theme?