BuddyPress.org

@wtfman

You are linking to a thread that is three months old. Much has changed since then. For instance, BuddyPress now runs in /plugins/– not /mu-plugins.

Also, as r-a-y has pointed out, once you activate BP site wide, there is a new menu grouping in WPMU admin called “BuddyPress”. It is located at the very bottom of then menu grouping column.