It looks as if bbPress is conflicting with users creating their own blogs. If bbPress is enabled when a user creates a blog, they are told ‘You do not have sufficient permissions to access this page’ when they try to get to the wp-admin for the blog in question.
The site is listed next to their user account at /wp-admin/network/users.php, and their username is listed next to the sites at /wp-admin/network/sites.php however, going to the record of the site created when bbPress was enabled, and the list of users is blank.
The cbox admin is reporting the following
Infinity Version: 1.1a
Developer Mode: Disabled
WordPress multisite: subdirectory
Loving cbox, can’t wait to get something up and running with it.