add instructions to the technical FAQ
Quick version (on the user end):
1. Click "Profile" in the menu bar.
2. Choose "Forum Profile" from the drop-down menu.
3. Click the "Modify Profile" button.
4. Choose "Look and Layout" from the drop-down menu.
5. Check the box next to "Return to topics after posting by default."
6. Click the "Change profile" button at the bottom of the page.
EDIT: This is my first post since changing the setting, and it works!