Was this padding with the integrated vapor barrier? Moister intrusion, either from below, above on from the sides, will do that to laminates. Make sure all edges at the walls has gaps to allow for free contraction and expansion. Also if you don't have an expansion joint for very long runs, you will have separations too.
If its close to the walls you could remove the base molding and tap it back. I had one in the middle of the room and had to remove a bunch of boards to get to it. Call you supplier, should be under warranty.