Toolbar PR is exported data from around July 26.

So the PR your seeing is from around then. If you use G analytics then you can have a look at the crawl ststs (I think thats the page) and see your distribution of PR across your pages.

Low = 1-4
Medium = 5-7
High = 8-10
(well that's what's generally accepted)

I reckon this data is far 'fresher' than toolbar.

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