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Most of the time, the majority of on-page links come from header, sidebar, and footer navigation. Do you have About in the header with a hover function that displays 5 more links (Contact, History, etc)? There's a good chance that's being counted as 6 links just as an example. Because of things like rational surfer, you generally don't need to worry about this as far as pagerank and all of that goes. I would consider though what the value of all of your on-page links to your users are. Use a clicktracking service to see which links are getting used and which aren't and then a/b/n test removing or moving some.