BuddyPress & Weird Extra Pages?

Hi, I just installed BuddyPress onto my site and everything is booting up great except for the fact that BP has created one extra page each of "Activity" "Activate" "Members" and "Groups" that are in my menu bar -- each is empty with no content (4 weird, empty and repetitious pages).

I thought I might be able to deactivate them through my page controls but they do not appear in the "pages" so I really have no idea where they are existing, how to deactivate them, or what purpose (if any) they are supposed to be serving.

Can you help? Thanks!