Well Google is updating it's pagerank again.  I saw the first glimpses of it yesterday with some new sites going from 0's to 4's.  Whenever they first start to update their pagerank it usually takes a week or two for everything to settle.  So sites will jump back and forth between the new and old pagerank values.  It's been 3 months since their last update so this one is highly anticipated.  After watching them juggle all their cached info around for months it's nice to finally see pagerank finally being updated.  I'm not sure why Google takes so long between updates.  Maybe because their index has doubled or possibly for other strategic factors.  I remember back in the day when they used to do updates monthly.