I have check google.com pr and I knew that Google.com page rank on 9 out of 10 where early It was on 10.
As google keeps changing search methods, etc., it's going to affect PR and placement in the search results. SEO is a lot tougher today than it was even a few years ago with Google. It seems easier to rank better with other search engines, at least for me.
The Pr has had a drop as of my today's writing of this post. But then, in the past not too long ago there was a similar decrease in the PR of Google and Facebook was enjoying a PR of 10. So nothing new here.
Would be time for a new pr update... With their new system and the so called panda blabla it's once in 30 days.. or am i wrong..
This happens from time to time as Google runs page rank updates from time to time. Some of the websites get benefit while some doesn't.