We've had our 2003 Accord EX for about 4 months now. We've had some other issues: a funny "clunk' from the transmission after backing up and then driving forward, but no squealing brakes. I've only seen that happen after they are wet, like when you drive through standing water. I'd have the dealer check into it.
MG Pilot, I actually get this with my Pilot. Even if the car's not "cold", when braking at low speeds, such as in a parking lot or even coming to a slow stop at a redlight, I often this a prolonged squeak. I knew it couldn't be the brake wear indicator since this noise was present shortly after I got the Pilot. I mentioned it to a service advisor when I brought the car in for one of the scheduled service, but of course, it wasn't looked into since they "could not duplicate the problem." I just hope it's not a warped rotor or some caliper problem.