I see them on Amazon, of course I can buy one there, but how long can you buy one and how long will they be supported?

On almost all of the videos I've shot with my Flip Mino HD video camera, I've gotten this thin, colored band (consisting of all of the colors of the rainbow) stretching across my videos. It sits just a bit below the top of the video. Does anyone else get this on the videos they shoot? My Mino HD is upgraded to the newest firmware.