That usually happens when google is updating PR. It will go to n/a if they are updating it so I would check tomorrow and you will probably see the actual PR. Unless they are pretty bad sites then they may just have been penalized!
I did not notice any change either. I anyway think it is a bit early for a major PR update.... but you never know. Google loves catching people... off-guard! Regards, RightMan
Nothing here too . Its the same and i don't think so it can happen so early . Maybe Google is testing something .
All websites including www.google.com is showing PR N/A on my browser even after repeated REFRESH that I do. So something is definitely happening.
Well, I've to say I only noticed one of my sites changes in PR and actually it dropped from PR3 to PR0 !!!? Even tho, all other sites never changed in PR yet.