Losing control over signups

[emailapphost]

I am now getting 20-30 fake spammer signups per day on my forum.
I am losing control over this.

Do people actually manually type in these signups? Or are these signups automated? Does anyone know?

How can I stop them?

I have captcha on, I have extra fileds in the db, I do manual approval. Yet they come in hordes.

In the list of "List Users Awaiting Moderation" I am unable to see who is legit and who is not.
So I have to manually go through 3-4 pages for each of 30 fake signups every day, this takes half an hour and is not sustainable.

Is it possible to have more information about each singup in the "List Users Awaiting Moderation" so I can more easily see who are legit?

I seriously need help here to save the forum.