The Haiku site has run into some difficulties as of late. Drupal 6.x is now end of life which means modules are no longer being maintained. This has greatly impacted the stability of the site as the final urgent Drupal 6.x security updates have been applied.
This is a companion discussion topic for the original entry at https://www.haiku-os.org/blog/admin/2016-08-03_site_issues_forum_upgrade/