I was using ubuntu 11.04 and everything was ok. Suddenly (after an update, I think) I was unable to see any video (any website) using firefox. I decided to do a clean, new installation (from CD) of Ubuntu 11.10 and the problem is exactly the same no videos on firefox (no matter website) I already tried flash-aid with Beta versions and stable versions and nothing. I'm a pretty new ubuntu (Linux) user.
Any help and/or advice please ????