We'll create fresh WordPress site with BP Profile Activity Wall installed. You have 20 minutes to test the plugin after that site we'll be deleted.
Adds a a new “All” tab in the BuddyPress Members Profile and makes it the default landing tab in order to create a Facebook like Wall.
Simply install and activate the plugin then visit Profile>>Activity.
For more options visit Settings>>Profile Activity Wall where you can choose to remove the other tabs and also setup homepage and login redirects so that the activity wall becomes the default homepage for logged in members.