tripod not fully locked in place (kept folding and unfolding because I also wanted to walk around without the camera for a bit, would see something I liked, ran back to car, got camera, took pic, replaced camera, walked back, repeat. The whole rushing of the previous mentioned. Not using mirror lockup and timer, using f/1.8, shooting ISO400 and being impatient, trusting the autofocus without painstaking double checking(it is painstaking in the dark), not reviewing LCD for sharpness. Most of all it was the fact that it ws my first Saturday out to this thing and I was a bit caught up in excitement. I might as well post this pic of my car while I'm here. This is much more controlled and better thought out.
http://i108.photobucket.com/albums/n...ywallpaper.jpg
The main reason I post all of that, is because I just got a 20D (traded in my XT) last week, so I was eager to use the shots out of that body only.