As I understand, after the creation of vBulletin 5 all of the official language packs have been in the same place in the members download area. This is not the case for vBulletin 4 though.
I went to for their official language pack for 4.2.3.
Is there any other official vBulletin websites for other languages? For example is an official variation? (even though there's the official French in my download area, it is only for 4.2.1, while I am running 4.2.3 and I've read of the precautions of installing a language pack for a version other than your own)