As you've found out the hard way, "saving" money by trying to recycle pallets isn't always a good idea -- be honest, there was nothing "nice" in those pallets! I've done it too, and nicked a planer blade with embedded grit, not a nail. Sorry to hear you woes, but as Insomniac suggests, you've got an excuse for a new tablesaw. And, store-bought wood.
Rob