Well, yesterday I posted about the pagerank of Google Blogoscoped where blogoscoped got the PR 8 :)

Then I thought of checking the pagerank of my blog....I was under the impression that my blog has pagerank of 2 but when I checked my pagerank through this URL : pr.blogflux.com/, I found out that my pagerank is 3 but only when I check the URL as reviewsaurus.com but when I check the pagerank of reviewsaurus.com then my pagerank goes down to 2.

So, my question is that even though the page is same and the domain is exactly the same then whe is there a difference in the pagerank? Is it a fault in the pagerank system?

You are hitting on different datacenters, I assume:
mattcutts.com/blog/new-toolbar ...

So you mean to say that after some time my page rank will be 3?

I checked the pagerank on livepr.raketforskning.com/ for all different data centers....and it showed 3 on some of them and 2 on some....so you think that it may become 3 for both the URLs in some time from now

To Google, the www and non-www domains are different, even if they have the same content. Assuming that is the reason for this behavior, you can do one of a few things.

1. Do a 301 redirect from one sub-domain to the preferred one.
2. Sign up at google.com/webmasters/sitemaps ... and set your preferred domain.