i have SBTB on dvd from season 1 all the way to the zack & kelly wedding. but in the season 3&4 dvds it seems as if the episodes are in the wrong order. does anyone else have the same problem? or do i just not remember the order?

the episodes are listed correctly on the box and on dvd menu but from the zack and kelly break up it goes straight to the summer at the beach with stacy. then after the 4th of july episode the episodes go back to school then in another cd back to the beach. please help