Seems my site has been hacked or something. Almost all folders in my forum are gone, only cache & calendar & img are left.
I'm using 1.2.11, and only the forum is affected. The database seems intact too.
Here is my frontpage:
http://www.princefams.com/index.php
This is the forum:
http://www.princefams.com/forum/index.php
I guess I should just upload the files and folder on my ftp again, but I'm concerned about why this happened.