When i woke up this morning....no i must start different. When i want to post a topic this morning, i came on the forum-intro at once without see the topic. There was no topic. The who's online with the note that i was online was gone also. Other members noticed the same problem. And...the preview did not work. Al we could do was reply, but that's only half of a forum's function so i had to act.
I make backups, so i can step by step replace files and i came to the conclusion that it has something to do with this hack. Could it be that this modification begins to make files with a sort of Harry Potter behavior?