Aude Sylvain Jan 24, 2011:

with Tony Yes I fully agree with Tony that "the customer complains about a problem, but the company doesn't acknowledge that there is indeed a genuine problem, but prefers to euphemize it as simply a 'concern'".
Exactly my feeling, this is why I proposed "préoccupation". Of course, "problème", "question", or even "commentaires" might also fit depending on the actual context.

Tony M Jan 24, 2011:

problème Whether or not this is an appropriate translation for 'concern' will almost certainly depend on just what kind of 'concerns' might be involved. I feel sure a different term might be needed if one was talking about "concern for the safety of millions of people due to rising flood waters" and a concern that "the colour of the blouse I ordered from your catalogue isn't quite the shade I expected"!

Concern is a good catch-all word used a lot in this sort of context in EN, especially when one wishes to try and avoid acknowledging the negative connotation of what might be a 'problem' — in other words, the customer complains about a problem, but the company doesn't acknowledge that there is indeed a genuine problem, but prefers to euphemize it as simply a 'concern' — an 'alleged problem', if you like!

It's all part of being as non-committal as possible for as long as possible!