A lot have been talking about their pages are missing in the SERPs and high PR sites suddenly became PR0. Do no panic. It’s probably still there. Just temporarily missing. Read about the PR changes and missing ranking. And I thought it was something else since Google was spotted reading CSS files.
Popularity: 2% [?]

yeah.. this also happen to me. One of my blog suddenly lost its rangking.. but after a few days it comes back. no need to worry if you follow the rules.