Translate the following English sentence to French:
"On the other hand, more pro-active attempts, such as OLAF, which is currently operating, have not allayed legitimate concerns about the system of guarantees for individual rights."
Par ailleurs, les tentatives les plus volontaires, comme celle de l'OLAF actuellement, ne suffisent pas à dissiper les inquiétudes légitimes entourant le système de garantie des droits individuels.