My simplysearch4it.com site now has risen from PR4 to PR5. My new subdomain pages has also been ranked at PR4 and PR3’s
After the update I have noticed that my rankings within Google has improved for the the Sub Domain listings.
But then they would have probably improved anyway without even having a PR update as I am now promoting them heavily, which is giving me alot more link popularity.
I say this because I don’t thing PR means much now.