I still don't know what broke exactly. Something to do with the shutter/electronics. If you go into the CV Forum, you'll see the thread I posted about it. Anyway, I went back and exchanged it. No problems with the new one.
Rover, you're right - for some shooting situations, the shutter sound blends. But, then again, I don't really find it to be so significantly different than other cameras I could use in those situations. The difference in pitch is not significant enough to make such a difference to me - but hell - I live in Tokyo where it's either noise chaos or zen silence. In the latter type of moments, I'll pick up the Hexar. Don't get me wrong - I like the R3a. It's light, simple, and fast (AE).