Almost certainly the differences in time are related to the credits and not the content. For examply I just within the last 10 minutes learned the the BBFC has classified the movie AGAIN at 133min 07 sec------1min 09 seconds longer than before. The 2D and 3D versions are both listed at 131min 58 sec. Fairly certain this longer version is the IMAX version---same cut with altered credits. Perhaps the formating in IMAX forces changes in the speed/layout of the credits. At any rate that now makes STID the longest theatrical Trek movie.