Since the latest update, which I think was today? There has been a flash video issue and its a big one for me. When I'm on youtube a play a video, I hear it like an echo, at first I thought it was a sound issue, but if I pause the video, the sound keeps going. This problem is resolved by disabling noscript. Anyone else getting this? Only started today.
Mozilla/5.0 (Windows NT 6.1; WOW64; rv:12.0) Gecko/20100101 Firefox/12.0