Sahara, I know there's a problem with your account ;) Looks very much like that is a different problem from what this thread is about.
You see, this thread, and the offer FastMatt makes, is about people doing PFI, getting indexed, but losing rankings afterwards.
Whereas you say your paid pages are not in the index alltogether.
Furthermore you say, your pages get crawled, but not indexed. This sounds to me like Fast's spider has problmes getting to your pages.