A week or so ago, some people noticed some updates to Google Toolbar PageRank scores. It was unconfirmed however if this was an official update. Matt Cutts eventually confirmed on Twitter that it was indeed a Google update.
People's sites are going both up and down, but it is important to remember that the toolbar is "not an accurate indicator of how Google ranks or values a site," as Loren Baker notes at Search Engine Journal. Though it is still a factor.
Cutts also makes the bold prediction that this will be the last PageRank update of the year,i think that the next update will be on march 30 :)
This blog page rank remains the same PR 3..