I dont understand this what-so-ever... My index page of my site is a PR0, yet some of the inside pages are PR1-3.... The pages that have PR are rarely linked to, whereas the main page has many many many links in from high PR sites. Also, why does a site when typed in SiteName.com shows a PR and when you add the www.SiteName.com it is a PR0. Thanks!
We are in the midst of a mass PR update. During this time PR does fluctuate, especially when you sometimes get PR data from different data centers. How long has your homepage been PR0? When your PR drops down to 0 it is reason to be concerned. That sometimes means that your website has been penalized. I would think that would affect the entire website though. Perhaps it will affect the rest of the site as the PR update progresses.