I’ve heard from several clients today who had their page ranks change both for the better, and worse (my own hardware website went from a PR5 to a PR4). However it seems that a re-occurring bug where Google drops the page rank of internal pages that deserve to be ranked has snuck into this update. After most page rank updates I usually check out one of the previous employers websites to see how their page rank distribution is. Currently of all their pages the homepage, and two of the categories pages have page rank the rest of their website reports as being unranked so not even a PR0. Hopefully we will see a corrective page rank update in the next few weeks.
SEO news blog post by Dave Davies, CEO @ 5:42 pm