I found a solution that worked for me at this link:
http://helpx.adobe.com/x-productkb/multi/flash-player-11-problems-
playing.html
Basically, first install HAL
sudo apt-get install hal
Then quit your web browser.
Finally, empty out some files from the Flash_Player folder in the hidden
adobe
Does Mint include HAL by default? If so, I'd guess that's the answer to
why streaming of the Olympics works in Mint and not Ubuntu. The first
time the NativeCache, AssetCache and APSPrivateData2 files are spawned
in Mint, HAL is already present. In Ubuntu, those files already exist,
so need to
