BuddyPress.org

Be sure to put your bp-custom.php in /plugins/ and not the /buddypress/ directory so it is not overwritten on upgrades. You’ll need to add a comment header and activate it in RC-2.

Phluxor: disabling the admin bar is easy, add this to your bp-custom.php or your wp-config.php:

define( 'BP_DISABLE_ADMIN_BAR', true );