OK, so my bad. I basically misunderstood the instructions and I was looking in /Library instead of ~\Library. Now when I applied the correct fix the problem seems solved, thx!
In regard to the blocked forum registration - I hear you but ... how then any other internet forum in the world does manage to defend against DoS while retaining the basic forum functionality ? I am just trying to say that the currently deployed convoluted approach is quite disappointing from user's point of view. Even now I am using "comment" feature instead of proper reply, because .. cannot reply.