In one day, my site went from zero, to five (yesterday), and now its zero again. Is this common or something? Its like giving candy to a baby and then taking right before they get a lick. What is google doing??
I seems there is some kind of trouble with the toolbar. With some research, google still shows pr 5 but the toolbar is 0. I wonder how many times the toolbar is wrong?
Your tolbar is pulling PR from different data centers. This normal. The export is ongoing and you will see fluctuations. Check this out: http://www.seologs.com/pr-check/pagerank-dc.html Hope that helps.
What if my site is showing PR4 on two datancenters and the rest show PR0? What does that mean? Will my PR4 return again? (toolbar is now showing zero)
It seems that PR update is still going on. But my sites seem to reach their stable pageranks and i am happy with the result . Good luck to you ..