I don't know for sure if it's happening now or not, but my data center might be updating - my site isn't showing anything when you run the info: query, and that usually happens about 4 days before they make a change.
They seem to do a major update roughly every three months and there was big one at the end of December - so end of March, I'm guessing? Just a guesstimate. Dan
You shouldn't put so much stock in your PR. It is better to have quality content and the rest will come. I got punished from Google for doing PPP and paid posts etc... and my site went down to 0 where it has been for 6 months. It has not affected my visits or my search position. the site is a niche site that is on page 1 of Google search. Just my thoughts
You can guess and keep guessing, but thinking it's in the next two days would be too hopeful. I hope in the next month, I would be happy enough with that