I'v been constantly swapping batteries since the day I'v got it (Sept 8th, 2009) and mines is fine.
I though about putting tape on it a few times but you have to be careful with the tape because when you take it off it can pull off the "red criss cross stip" btw mines has been thew rain & snow granted I'v tried my best to shield it during those times. but anyway, it really suxz for those of you whom have red strips and don't know why. If mines ever turns red I hope I at least know exactly why so I won't feel like it turned with my normal use.