Help with Firefox...

[Ubu4moi]

I'm running Ubuntu Ultimate Edition 2.0 and Firefox was working well until now. Flasplayer seems to be wrong, I cannot see videos on Youtube ot play the radio in the browser. I had all the plug-ins installed. I already re-installed Firefox and plug-ins but it won't work. Anyone can shed some light on this?

[mikewhatever]

What plugins have you installed? Can you post the output of the following command:
dpkg -l | grep 'gnash\|sfwdec'

[Ubu4moi]

Thanks, it was a wrong plug-in.