SELLER: Kate Walsh BUYER: David Arquette LOCATION: Encino, CA PRICE: $4,600,000 SIZE: 4,332 square feet, 3 bedrooms, 3.5 bathrooms plus guesthouse with bathroom YOUR MAMA’S NOTES: After only one month on the open market, primetime hospital drama veteran Kate Walsh sold her stylishly appointed Encino, CA, estate for $4.6 million to actor-producer David Arquette who...