Nope, this is serious. It was in the news about 2 years ago because there was some buzz over whether it was done intentionally.
I know that I have a hi-8 that is supposed to do this though I've never tried with the filter....
Check this link:
http://fans.redclouds.com/dogpound/wwwboard.html
I tried to find more of a news link on it but no luck... Guess it's old news...lol