sitemaps page ranking stats query

Hi,

I've just been looking at the new crawl stats for my site,
http://www.milanclothing.com and noticed something that does not seem
quite right. In the sitemap stats it shows the distribution of high,
medium and low ranked pages and it shows that about 20% of my site has
a medium rating, but when I look at my site in IE, both using the www
address and the non www address - http://milanclothing.com (cos I know
it makes a difference to the page ranks depending on whether you
include the w's or not) - then every page on the site seems to have a
page rank of 0 as measured by my google toolbar, even though in the
sitemap stats it says that there should be some medium ranked pages.
This means that either:

a) the google toolbar is wrongly reporting all ranks on my site as '0'
(unlikely)

or

b) the stats in the sitemaps part is not correct. (possible)

or

c) there are some medium ranked pages which I cannot find (unlikely)

or

d) google has some time delay mechanism for preventing relatively new
sites from achieving a page rank greater than 0 (???)

It would be useful if we could list the urls that have medium and high
page ranks in the reports so we could verify what these stats are
saying, even if it were just the top 20 pages in these categories.

Has anyone else found the same thing in their stats?

Thanks

Myke Black
e: mykeblack@gmail.com
b: http://mykeblack.blogspot.com/
w: http://mykeblack.co.uk