I was complaining about this in SDM #1393 and #1412 last week...here's how to fix the bug that's keeping you from seeing the users who need admin approval:
"In acs-admin/users/complex-search.adp, the option to show or hide non-authorized users should always be displayed. Currently the option is hidden if there are fewer than 30 users. This makes no sense and is really confusing when you're trying to figure out how to approve users. "
