Thankfully people who have already downloaded a language pack or have a multilingual disk are unaffected by this issue.

This is a trifle odd however.

Anyhow, the standalone language packs for Windows Vista 32bit Ultimate or Enterprise

Chinese (PRC)
Chinese (Hong Kong SAR)
English (US)
Italian
Spanish
Swedish
Japanese
Portugese (Brazil)
Norwegian
Dutch
Finnish
French
Russian
German
Danish
Korean

And for 64 bit Windows Vista Ultimate or Enterprise:

Chinese (PRC)
Chinese (Hong Kong SAR)
English (US)
Spanish
Swedish
Japanese
Portugese (Brazil)
Norwegian
Dutch
Finnish
French
Russian
German
Danish
Korean
Italian