I had my gallbladder removed at the same time. My dr. said that if it was inflamed, or any of the gallbladder contents spilled during removal, he would postpone the band for about three months. Luckily all was well, and I had both removed, and am doing well - down 55 pounds from 9/1/07.
BTW, I grew up in Missouri and graduated from Mizzou - Go Tigers!!