I ran across something that looks to me to be a typo in the text of WordPress in the Profile Fields.
I'm running WordPress 3.5.1 with BuddyPress 1.6.4 with BP Columns Child Theme.
I'm still learning WordPress, so I don't exactly know if the text I'm seeing is in my installation of Multisite or BuddyPress or the child theme.
In the Profile Fields when you are adding a field, there's a couple of tick boxes at the bottom of this page: "Default Visibility" and "Per-Member Visibility." Under "Per-Member Visibility' the first choice "Let members change the this field's visibility."
I may be incorrect, but I wanted to point this out in case it needs to be changed. Either "the" or "this" should be used, but not both.
Here's my site I'm working on -- and having a lot of fun while doing it: http://www.gumpolen.com