Page is a not externally linkable
BigDave - 10:00 pm on Jan 10, 2003 (gmt 0)
It is not the link to the home page or the sitemap that is the problem, it is the lack of other internal links that sent the PR to other pages. If your only navigation links are to your home page, or a sub page you get half the pr going back up to the home page and half to the sub page. If you have 20 navigation links, only 1/20 of the PR gets sent up to the home page immediately. Your home page should still have the most PR, but you will get a better distribution in the lower levels.
Might I suggest breadcrumbs? Those little Category link > subcat link> subsubcat link > you are here things that you see on the top and bottom of many pages?