Google has updated the Toolbar PageRank score again over the weekend. Reports come from WebmasterWorld and a dozen different threads at DigitalPoint Forums.
This seems to be a continuation of the paid link PageRank downgrades.
Andy Beard documented some of the sites that were impacted by this fourth rendition of PageRank scores in the past month or so.
You can find historical PageRank updates in our Google PageRank updates section of our site.
Forum discussion at WebmasterWorld & Sphinn.