Content type visible for public

Hi,
I have trouble using the content access module. I created different content types which each should be visible to only a certain role.
In the Access Control tab for the content type I therefore only ticked "view any content" and "view own content" for the one role, which is supposed to read this content.
After creating a node for this content type any user still has access to this node, it shows up in the menu and I also found a refer in Google. This is totally the opposite what I want!
In /admin/user/permissions I gave permission for everybody to access content in the node module. For the content access module, no ticks are set.

Can anyone tell me, what I did wrong, and why the content types are still accessible to everyone?

I am using Postgres 8.2, Apache 5
Thanks
Thomas