1) Bing Translator not work fine yet. Show an XML error to translate any urls.
2) Google translator is included in K-Meleon translation tools since 1.5.0 version and it continue work fine currently, no changed is needed.
3) For improves in K-Meleon russian contact with K-Meleon Russian Team:
http://kmeleon.geckoworld.ru/
K-Meleon in Spanish