haha, that's what everyone says, whenever i give it to them they immediately want to throw it at somebody. i'm surprised i didn't notice it more though, the chain was a little loose after i changed my rear rotor, but not for so long that it could have caused that, but power was a little... sluggish when i'd get on it and it would skip one or two teeth when i would downshift

but yeah, i'll be replacing the rear sprocket, too