If you are seeing "N/A" it's becuase you need to get a new Page Rank toolbar- some of them stopped working the other day as google changed some things
Panda 2.5 ate more then bamboo for some sites. Wow crazy of the changes to well known sites though: consumeraffairs website lost 78%! They better learn to write better reviews I tell you!
One of my site goes for pr 0 to pr5, and all other remain unchanged, i guess it was not major update.
Just because some of you people didn't have changes in yours doesn't mean it was a false alarm. God. See, a lot of people are claiming that they're PRs changed. So obviously it can't be assumed to be a false alarm just because your own site didn't change.