Spammers Re-Entered Again

Lately, i saw spammers re-entered Indonesian Linux forum again. I didn't realize that when i upgrade the forum, i override the file that should load the Advanced Textual Confirmation code as well. The result was ATC installed, but it wasn't loaded by the phpBB scripts. Right now, i have re-added the script and hopefully those spammers won't be able to pass the protection i used for the forum.