The problem is more that if you set your language to german or french first, and then move to another language like russian, the game somehow shows all the menus and stuff in the previous language, while you would expect it to be english.
For all the languages that are not en/de/fr i assume they are en for looking up itemnames and so on. However if you set your language from en->de->ru then it gets messed up. I have a feeling that it remembers the last official language you set.
Did not test on a german or french official install, but i assume that you go from such version to russian, that all the non translated text things are still in german or french.
Which leads me to the question, is there a way to determine the base language that a client is running in.
Anyways, as merlight mentioned, it is my own addon adding itemID to the table. Doh ... Been messing with so much code lately that i don't understand my own addons anymore ...
