where are those lines in buddypress?

I've a translate issue with my RSS feed , my site is in french bu some line are still in english in the groups section and im looking for those line.

My site is : http://webfeminin.com/ im using BlogMU theme and as you can see in the middle column ive some issue with the accent (special character use in french language) : Karine Frigon a commenté le billet La Légende du Photographe Semi-Pro should be : Karine Frigon a commenté le billet La Légende du Photographe Semi-Pro. also im looking for those sentence as well - posted an update in the group- to translate it in French.
thank you.