Google pagerank update - 27th September 2008
Looks like Google has rolled out another PageRank update. Some sites have faired better than others, there has been a shift of 1 or 2 points for most sites, but there seems to be a higher page rank assigned to pages deeper within the hierarchy; giving more power to pages that really matter.
The last update was in July 2008. Roughly, Every 3-4 months, Google Updates its database and re-calculates the PR values & then updates Google Toolbars worldwide.