My blog has gone from around 300 uv a day to nearly 2,000 uv a day, and now my adsense ads display public service? What is this about?
Maybe your site got banned from AdSense? I doubt that happened, but you still might want to try to login to check it out.
Becuase. Seriously, please use more descriptive titles in your threads! Is it possible the ad inventory just ran out for your particular content-area with the increase in views?
The Google bot is confused about the theme of your website. A few different words about another topic can be enough to have that problem. Just keep your theme very narrow. Don't mix different topics on 1 website or blog.