California Recall Postponed

A federal appeals court says the California Recall election should be postponed because some counties will use punch cards (read the decision here).

A quick read suggests that the court did not consider how often punch cards are mistaken. Since no system is perfect, an important question should be: how many more votes will be accurately counted by delaying the vote? Anybody know how accurate the different voting mechanisms are? In short, will the costs of delay be less than the benefits?