Version 7.3 of both CourseForum and ProjectForum has been released.
This update focuses entirely on performance, and should particularly affect people who are running sites with very large groups/courses (i.e. large numbers of pages and/or attachments).
Note that this includes groups with large number of projects (even if each project has a reasonable number of pages or attachments), but doesn't impact sites where there are a large number of pages or attachments, but spread over different groups.
Thanks to our friends at Geometrica for their help tracking down some of these issues.