Babel 2 disc R3 - subtitle warning
 

Got the Region 3 Hong Kong 2 disc "Babel", with the "Making Of" on disc 2.
The subtitles on the main feature, and the Making-Of, you have a choice of traditional Chinese or English.

The English subtitles caption ALL THE DIALOGUE, including the English.
There is no other option, so this is similar to the Kill Bill Japanese discs issue.

The upcoming 2-disc UK version most likely won't have this problem.