Season two was crippled by budget constraints. The farm was cheap to film on, so they stretched it out agonizingly long as they could without driving us into madness. Basically, Mad Men resumed filming, requested pay raises, and it was granted. To fill the gap in the budget, Walking Dead took a serious blow. The show's producer Frank Darabont protested, and was removed, and new "budget friendly" producers were brought on. Since the last season of WD trounced Mad Men in viewer numbers, and came dangerously close matching their critic reviews, I don't foresee this season being quite as hamstrung. But that doesn't really promise us the same caliber of plot and motion the comics offer. AMC seems like an improper vessel for WD, I imagine it would be more at home on HBO, or some station that has a bit more leeway with their content.