I'm underexposed ...
Yea,...
I've had the problem of my 10D consistently underexposing images.
I've tried all three different metering modes, and all images come out anywhere from 1/2 stop to sometimes over a full stop underexposed.
I always shoot in RAW format, and adjusting in PS is always necessary. I could keep on doing that, but I feel that the 10D should (and could) do a better job of exposure and save me a step in the conversion process.
So, I've sent in my 10D to Canon hoping that they can adjust it so that it exposes more shots closer to "correct" (the term "correct" being a totally subjective experience - I have a friend who's a professional sports photographer. All of his shots come out, to me, underexposed. But, to him, they seem fine) ....
I fully expect to have to adjust some shots for exposure, but I've had to adjust 99% percent of all shots I've taken so far with the 10D. And I just feel that's way over what a probability of "mis-exposed" shots would be .....
I should know if Canon is up to the challenge in a couple of weeks .....