With CaPa enabled, authors on my blog have restricted access to comment moderation in the dashboard. The settings on the categories allow them to see the posts and comments on the frontside, and they see a number in the dashboard menu indicating that their are comments awaiting moderation. However, when viewing the comments, it says there are "No comments found."
Logged in as an admin, and I can view and moderate the comments just fine.
I assume this is a bug with the plugin, as I've changed every setting I can think of, short of disabling the plugin itself.