[_asummers]

You could say something like "fixed stability in account management" or "fixed crash issues across application, improving stability across board". I sympathize with not wanting to go into more detail than would be generally understood by the audience, but there's a large chasm between "bug fixes" and that. If I was experiencing those bugs, I can now expect them to be fixed and I'm now in a better spot if I see them again to say "hey you didn't QUITE fix that in release X". If I see "bug fixes", I can't guess what happened in that release.