I hope so too, but I don't know how at the moment.
Our anti-bot measures were also keeping real users from registering, so starkad had to disable them. So right now we seem to be stuck with either countless bots spamming up the forum or new users not being able to register. And we also have unregeistered bots all over the place, while they should only be able to post in the Feedback & Support forum, but with the latest phpBB update I absolutely cannot find the right settings for this anymore.
Still looking into a solution. I am sorry for all the bother.
Edit: I think I finally found the guest posts settings, though I am not 100% sure they were the correct ones, we will have to see whether that will at least keep unregistered bots from posting. Don't have a solution for registered bots yet.