Page Rank Fluctuating?

The question out there is this a Christmas Page Rank Update?

How many of you have seen the number go up and down, even in the same hour? In Fact the update has been going on for some time now and isn't quite done moving to all the datacenters yet.
You can check your pages across the major datacenters below:

http://www.iwebtool.com/pagerank_checker

Happy Holidays!!

Jan

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