@Rick - okay, ran both queries, and it seemed like everything was okay but after a few minutes ... Well, this happened:
http://www.meikin.net/issue1.png BUT... When I run the queries again it says that 0 rows are affected.
I click on the forum to see what I can do...
http://www.meikin.net/issue2.pngThen, I go to click on the shown topic directly, to delete it, and this happens:
http://meikin.net/issue3.pngand when I click into the specific subforum, this is what I get:
http://meikin.net/issue4.png