Chris Fairey posted on the forum topic WordPress 3.0 + Buddypress — User Creation Problems? in the group How-To and Troubleshooting: 3 years, 8 months ago
you’ll have been sent an email with an account activation link, clicking that will activate the account and enable you to log in. (I have just done this myself using my WP3.0 test install).
@codebanshee active 3 years, 8 months ago