I don't see any PR update. Maybe you just see the PR on google toolbar and sometimes it's not accurate.
Some DCs show PR0 for my websites: 216.239.63.104 and 66.102.7.104 The others show the PR updated in April. I also saw changes in Google Webmaster Tools. I have a PR3 website which has some green in Medium Pagerank which is meant to PR5 and PR6.
Those are outdated data.. Google recently retired few datacenters.. so querying those datacenters will return PR-0 for any page..
Are you absolutely, positively sure of this? (i.e. is it possible your Toolbar - or however else you check PR - was not functioning properly for a little bit?)
Antonio is 100% correct. All depends on which DC your ISP is linking to for PR toolbar. There is no update happening. Close this thread. Col
Oh boy another friken chicken little thread about the sky falling because someon e saw the google toolbar change when they checked thier site. Ok people we need like a forum that is specifically for pr and backlink threads. If you post outside of the thread you get a very strong one chance warning. Before posting there should be like a 50 question questionaire about did you check this or did you check that. Then if you can make it thought the questionaire then you can post.
Last one was slightly unusual, it rolled out on some DC's for some sites then stopped for about a week then finished off again with the Toolbar export on the 29th April. If you ask me Google had problems, not that we will officially hear about it.