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Could this be because the title for some 70 pages is exactly the same? Is this considered spamming?
I suspect that there have been insufficient incoming links (therefore PR) to interest G in crawling too deep, and what it has done is list the URLs of the links found on the pages it DID crawl.
Haven't checked the logs in detail to be sure.
Get some more links, bump up your PR and G'll catch up with you next round, if not sooner with Freshbot.