[Burt Adsit]

The inability to accept/reject membership requests and the “Are you sure you want to do this?” error message are related to wp security issues. wpmu 2.7.1 uses things called ‘nonces’ that ensure that the user who got the form actually submitted it back.

I don’t know what member theme you are using but if you are trying to use an older version of a member theme with wpmu 2.7.1 and bp 1.0 it will fail like that if it wasn’t written to pay attention to ‘nonces’.