Glad this topic was started as I was thinking of posting on the subject of YouTube and this should fit in here without needing a new thread.
Take a look at this video (it's mine but this is not spam, bare with me)...
http://www.youtube.com/watch?v=DjRJlyl7P6E
This is a video of the time when BBC Breakfast accidentally broadcast an unbleeped version of an audio clip that containing swearing. I uploaded this video over a year ago and it was fine then. Over the last couple of days, I had a couple people commenting, saying they couldn't hear any swearing. When I watched the video again, it turns out that the audio clip has been removed.
I have had whole videos removed before and I have seen audio being disabled on whole videos before, but this is a new one on me. Has anyone else seen videos edited after they have been uploaded? Is that what has happened here or is it just an error and a coincidence that it is just one part that has been removed?
Another version of the video from another user also exists on YouTube and that has not been edited...
http://www.youtube.com/watch?v=6UHDz0dkJ34
To bring this back on topic again, the subtitles on my video (which I typed myself) have not been edited, so are now incorrect.