I now have just over 3000 miles on my 2009 Prius. About 200 miles ago the brakes started to make a noise like the pads were without pads, just metal, so when applied they'd sound like metal to metal contact. (Harken back to when we were young and didn't have the money to replace brake shoes when needed.) I took the car into the dealer from where I bought it and two hours later they said there had been rust on the rotors and that the rust had gotten into the pads. They said they sanded the rotors and the pads clean and they're now good. It was true, no more noise. When asked how they got rusty this fast the service manager said he didn't know, maybe when coming over on the boat. And he said they'd never had that problem with any other Prius. Just today, one week later, I noticed the sound had returned...metal to metal rubbing, only from the front it seems. Has anyone else heard of this or experienced it and does Toyota's explanation make sense. Thank you.