My all blogs page ranks are falled sown to 1 from 4 and 5 page rank blogs, I am really shocked. This time google page rank is worst. In reports about 40% bloggers loose their page Rank? What about your page ranks?
There are two types of pagerank numbers that Google ccurrently will give for a specific page.One is the toolbar PageRank shown on the Google toolbar.This number varies from0-10.The other type of PageRank is in the Google directory.There is no numbers for it.
Google did perform an update already this year and you are no the only one who noticed. Relevancy keeps gaining in importance and Google keeps making updates that put more focus on site quality. My guess is, that in your case, 1 of 2 things happened: 1. Your site was deemed to be of low quality under the new algorithm and the recent refreshing to update data caused your sites to drop in PR. 2. Enough sites linking to you were devalued that it caused the drop in your PR. Normally this possibility wouldn't be a serious consideration, but being in-line with such an impactful update it might be the culprit.