http://www.pbase.com/fastuno
I too have a 10d and LOVE it...it has become my second wife!!!
Are you using a tripod or monopod? Typically in the dark and at those low shutter speeds, to get good results, you should be using some type of standing pod. I find that shooting anything lower than 1/125 handheld is a risk, not to say that you might catch a lucky shot, but they will be few and far between. The pictures from the 10d generally come out soft, it all depends on the setting you have on your cam. You can increase the user set sharpness for better results and perhaps even increase the contrast a notch.
When I first got my shots I was so mystified as to why I couldn't get some of those picture perfect shots, well it turns out that most of the fellas here at pbase (especially those with the higher ratings/feedback) use some type of post processing. For the most part, no matter how well your picture comes out it will improve after post processing.
My question to you and everyone else is....is this fair? Wouldn't you expect after spending all that money on your gear to get pic perfect shots at least 70% of the time. Why should you have to post process anything & create more work for yourself? Is this just part of the mystical nature of photography?