(supposed) new breaks that squeak?

[dagsamp]

So I just bought a 2003 from a guy who claims he just replaced the front break pads. The breaks squeak and squeal when im rolling in N. Or really slow im 1st. if I lightly tap the front break it goes a way for a few rolls then starts again. Do they just need to be broken in? Or is their an easy way to check and see if the pads are bad without taking it apart? Its really embarrassing to ride through town with a squeaky bike.