Yes, I have to chirp in here too. I had Google backlinks this morning, but now when I go to google and type in link:www. mydomain.com (my real domain is in my sig), I get nothing! Wonder what is going on...
Nope... you are currently being served by datacentres which haven't been updated yet. There are still a few DC's which haven't updated the past two PR updates. Use raketforskning to check your PR across the DC's.