BuddyPress.org

That may be the issue. I don’t think the password is stored in WPMU since it is done in the LDAP plugin. The funny thing is that other accounts that have authenticated via LDAP are able to post topics in the forum. It is only a recent problem.

I do have the allow user switching added to the config as well.

Should the user be able to login to BBpress directly from the forum main page? That may be the disconnect. I noticed that in the admin panel for bbpress, the user is listed but I cannot login to the bbpress site as that user.