BuddyPress.org

Hello.

1) Doesn’t really matter what you were upgrading from. Just install bbpress 1.0.

2) I don’t trust the auto upgrade process so I manually upgrade

3) No buddypress enable plugin is needed. You do have to be running the right version of php though. See:

http://josephscott.org/archives/2009/03/conclusion-of-libxml2-issues-use-php-529-libxml2-273/

http://josephscott.org/archives/2009/03/wordpress-libxml2-episode-iv-a-new-plugin/

4) Don’t know what the issue is there

5) Yes this user switching is needed.

Don’t forget to enable pingbacks and xmlrpc. Also my test group forum didn’t work right away. I disabled the group’s forum component in the group admin page, saved the settings and then re-enabled it. Worked after that.