Google Pagerank Update on Jan. 25 2013?

On Jan. 25th I saw an update of some toolbar pageranks which reverted back on Jan. 28th. The changes seen were on 2 sites which I follow closely. Unfortunately I can’t tell how widespread the changes were since PR is no longer indicative of quality so I don’t actively track it across many sites.

The last update was Nov. 8th 2012 so the timing seems to fit but it’s strange that I haven’t heard ANY chatter about it. Typically with a pr update however you end up with people complaining about it in all of the forums and the absence of that has got me wondering how limited this change was.

I’ve never heard of a toolbar PR update reverting back a few days later so could this be an update which google let slip accidentally and then caught a couple days later?

Two examples of changes I saw were:

  • Pre-25th was PR4 | Jan 25-27 it was PR5 | Jan 28 PR4 again
  • Pre-25th was PR3 | Jan 25-27 it was PR4 | Jan 28 PR3 again
  • Did anyone else see any changes in PR across their sites or have you heard of a temporary lift in PR?
    Any ideas are more than welcome :)