Did anyone notice anything? I have just seen PR shuffling for http://www.osdir.com - It went to PR7 and jumper to PR8 again in a matter of 5 minutes
If you're checking the PR through toolbar its possible that you can see those things. But try to use this tool to check what is the PR of the site : www.iwebtool.com/ or livepr.raketforskning.com/ .
Some temporary updates usually happen, even several times a week. Try checking the data centers to find out about the majority of them, and how they will settle.
I don’t notice any shuffle in PR, but in term of ranking I got 4 different result in a same day, sometimes it shown on 1st page and after 3 to 4 hrs it was on 3rd or 4th page, and vise versa I am sure this is a small indication of big changes,
http://oy-oy.eu/google/pr/ is another good one for seeing small changes, you can check 518 d/c's at once.