That's what I'm saying, I couldn't find it either.

Maybe (hopefully) someone will correct me/ us.
If not, it's back to the second post from the top.

Well, setup a new group (name it say, "restricted") and set its permissions to whatever you want to restrict (by using a -1 as the permission); then when a user pisses you off, simply file them into this group...

But where do I specify that a group can not send private messages? I don't see the option in group management screens (default or newly added groups).

I THINK: Permission Editor, Site Permissions, Total # of private topics allowed, -1

Thanks, I made the change. Although you don't sound certain about it. Can anyone say for sure?

lol, it SHOULD work, as the max pm's is set to restricted... I was unsure as I've never even attempted such a thing...