Has OSX 10.6 with the latest update as well as Safari. Starting yesterday, whenever I play something on Youtube, the original voice comes out from the video, and after 5-10 seconds the new voice comes out again, making the sound as 2 voices running on the video, crossing over each other. even if i pause the video, the new voice keeps going on the background. Is it the Safari problem or youtube? did this happen to anyone recently?