Internatinalisation

I'm using 1.1.2 and normally would use the english settings for lyx "LANG=en". But 
today I tried to set this to "de" for german. All I god was that the Help is now in 
german but the menus keybindings are still in english. As far as I remember this 
worked in 1.0.4 alright. Any idea what is wrong?

Soeren