I was thinking the same thing, that Lucas should learn from the example of these other studios when they screw things up. That and the fact that as far as box sets are concerned this eats up the ones from LFL.

Also this is a response from Warner that was posted on DVDTalk forums:

Statement from Warner Home Video, November 27, 2006

Bonus content was omitted from the "Superman III Deluxe Edition" in the 14-disc "Superman Ultimate Collector's Edition." Furthermore, disc one of "Superman: The Movie Four Disc Special Edition" did not include the Dolby Digital 2.0 mix. Neither disc is known to be physically defective in any way.

Warner Home Video wants to extend apologies to all of our loyal Superman fans who've waited so patiently for these great collections and has taken immediate steps to correct these errors with the intention of standing behind our product 100%.

Replacement discs can be obtained by calling: 800-553-6937. The exchange program applies only to purchases of the “Superman III Deluxe Edition” in the “Superman Ultimate Collector's Edition” and to disc one of “Superman: The Movie Four Disc Special Edition,” available as a single title, as well as in “The Christopher Reeve Superman Collection” and in the “Superman Ultimate Collector's Edition.”

Very good move on their part, and a fast response to a problem considering the news broke over a long weekend.