So after the last update to my Ubuntu install Flash stopped working on all my browsers. Which means no Pandora. Which is a no go. After Googling around I couldn’t find any fixes. However, the comments in the Ubuntu Software Center were really helpful. Someone recommended Flash-Aid (https://addons.mozilla.org/en-US/firefox/addon/flash-aid/) which is a Firefox plugin that automates Flash installation. I ran it on Firefox and then Pandora worked on both Firefox and Chrome. So two thumbs up for Flash-Aid.
Hope this eliminates any Flash induced headaches you might have.