After upgrading to RC3, it appears that when you are in a forum thread, a poster can edit (editpost.php) their post, change the subject, and the subject change is reflected in the entire thread, not just that post.
PHP Warning: Failed opening 'admin/groups/groups.php' for inclusion (include_path='c:\php4\pear') in D:\IISRoot\####\modules\system\admin\groups\main.php on line 5 PHP Fatal error: Call to undefined function: displaygroups() in D:\IISRoot\####\modules\system\admin\groups\main.php on line 85
I'm using the default theme. I haven't touched the original upload of the files. I can change themes in my user profile on the front page and they show up fine. The admin control pages just don't want to load.