I had a couple sites do that to me at bigdaddy pr update, my homepages would stay at the pr or lack there of whereas my innerpages where all 5's and 6's.On all sites the pages that did not change pr where indexed prior to bigdaddy, and the high pr inner pages where indexed in the bigdaddy datacenters for their first index in google. It goes to show a couple of things, one toolbar pr means jack, cause if my homepage pr of 3 can pass pr 5's to most pages and 4's to other I guarantee you Google doesn't treat my homepage like a pr 3 and more like a 5 + internally.Also somethings wierd with pages prior to BD.
Also your toolbar keeps reverting back because some of the DC's haven't been updated yet just like the big daddy pr update, and with what Matt Cutts is Saying, it will take a while for it to finalize.
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