It's muffled more than anything, there's a sound, but it's different to other macbook pro unibodys. I don't know if i should be concerned.
Well if it bothers you then take it to the Apple store to have it looked at but IMO, it's an improvement that yours has muffled sound, at times that trackpad click can be annoying as in quiet environments anyone around you can hear it which is why I would just use the tap feature.
That's true. But I find the clicking very satisfying.