I used to actually monitor PR daily. Then I realized it's not necessary, because when even a micro update occurs there's a giant freakout on here.
PR is updating every minute . But google show it quarterly . So dont worry .. keep link building .. Next Update ll (Aug15- Sep 15) .
When you created your website, what was your purpose: to get high PR or traffic? Please note, there is no relation between PR and traffic.
Over the weekend the first Google ‘Toolbar’ PageRank update of 2010 occurred which left some site owners quite happy, some a bit bewildered and did not affect many. Now, we should all be reminded that ‘Toolbar’ PageRank is different than Google PageRank because the PageRank displayed in the toolbar is not 100% reflective of the way Google judges the value of a website. A site without PageRank can still rank well in the Google index. A Site with a PageRank 2 can outrank a PageRank 8. Sometimes, Google will taketh PageRank away, but that will not result in your site ranking lower or less traffic.